It is rather strange that in these recklessly confident lists of

eminent "epileptics" we fail to find the one man of distinguished

genius whom perhaps we are justified in regarding as a true epileptic.

Dostoievsky appears to have been an epileptic from an early age; he

remained liable to epileptic fits throughout life, and they plunged him

into mental dejection and confusion. In many of his novels we find

pictures of the epileptic temperament, evidently based on personal

experience, showing the most exact knowledge and insight into all the

phases of the disease. Moreover, Dostoievsky in his own person appears

to have displayed the perversions and the tendency to mental

deterioration which we should expect to find in a true epileptic. So

far as our knowledge goes, he really seems to stand alone as a

manifestation of supreme genius combined with epilepsy. Yet, as Dr.

Loygue remarks in his medico-psychological study of the great Russian

novelist, epilepsy only accounts for half of the man, and leaves

unexplained his passion for work; "the dualism of epilepsy and genius

is irreducible."

There is one other still more recent man of true genius, though not of

the highest rank, who may possibly be counted as epileptic: Vincent van

Gogh, the painter.[5] A brilliant and highly original artist, he was a

definitely abnormal man who cannot be said to have escaped mental

deterioration. Simple and humble and suffering, recklessly sacrificing

himself to help others, always in trouble, van Gogh had many points of

resemblance to Dostoievsky. He has, indeed, been compared to the

"Idiot" immortalised by Dostoievsky, in some aspects an imbecile, in

some aspects a saint. Yet epilepsy no more explains the genius of van

Gogh than it explains the genius of Dostoievsky.

Thus the impression we gain when, laying aside prejudice, we take a

fairly wide and impartial survey of the facts, or even when we

investigate in detail the isolated facts to which significance is most

often attached, by no means supports the notion that genius springs

entirely, or even mainly, from insane and degenerate stocks. In some

cases, undoubtedly, it is found in such stocks, but the ability

displayed in these cases is rarely, perhaps never, of any degree near

the highest. It is quite easy to point to persons of a certain

significance, especially in literature and art, who, though themselves

sane, possess many near relatives who are highly neurotic and sometimes

insane. Such cases, however, are far from justifying any confident

generalisations concerning the intimate dependence of genius on

insanity.

We see, moreover, that to conclude that men of genius are rarely or

never the offspring of a radically insane parentage is not to assume

that the parents of men of genius are usually of average normal

constitution. That would in any case be improbable. Apart from the

tendency to convergent heredity already emphasised, there is a wider

tendency to slight abnormality, a minor degree of inaptness for

ordinary life in the parentage of genius. I found that in 5 per cent.

cases (certainly much below the real mark) of the British people of

genius, one parent, generally the father, had shown abnormality from a

social or parental point of view. He had been idle, or extravagant, or

restless, or cruel, or intemperate, or unbusinesslike, in the great

majority of these cases "unsuccessful." The father of Dickens

(represented by his son in Micawber), who was always vainly expecting

something to turn up, is a good type of these fathers of genius.

Shakespeare's father may have been of much the same sort. George

Meredith's father, again, who was too superior a person for the

outfitting business he inherited, but never succeeded in being anything

else, is another example of this group of fathers of genius. The father

in these cases is a link of transition between the normal stock and its

brilliantly abnormal offshoot. In this transitional stage we see, as it

were, the stock _reculer pour mieux sauter_, but it is in the son that

the great leap is made manifest.

This peculiarity will serve to indicate that in a large proportion of

cases the parentage of genius is not entirely sound and normal. We must

dismiss absolutely the notion that the parents of persons of genius

tend to exhibit traits of a grossly insane or nervously degenerate

character. The evidence for such a view is confined to a minute

proportion of cases, and even then is usually doubtful. But it is

another matter to assume that the parentage of genius is absolutely

normal, and still less can we assert that genius always springs from

entirely sound stocks. The statement is sometimes made that all

families contain an insane element. That statement cannot be accepted.

There are many people, including people of a high degree of ability,

who can trace no gross mental or nervous disease in their families,

unless remote branches are taken into account. Not many statistics

bearing on this point are yet available. But Jenny Roller, in a very

thorough investigation, found at Zurich in 1895 that "healthy" people

had in 28 per cent. cases directly, and in 59 per cent. cases

indirectly and altogether, a neuropathic heredity, while Otto Diem in

1905 found that the corresponding percentages were still higher--33 and

69. It should not, therefore, be matter for surprise if careful

investigation revealed a traceable neuropathic element at least as

frequent as this in the families which produce a man of genius.

It may further, I believe, be argued that the presence of a neuropathic

element of this kind in the ancestry of genius is frequently not

without a real significance. Aristotle said in his _Poetics_ that

poetry demanded a man with "a touch of madness," though the ancients,

who frequently made a similar statement to this, had not our modern

ideas of neuropathic heredity in their minds, but merely meant that

inspiration simulated insanity. Yet "a touch of madness," a slight

morbid strain, usually neurotic or gouty, in a preponderantly robust

and energetic stock, seems to be often of some significance in the

evolution of genius; it appears to act, one is inclined to think, as a

kind of ferment, leading to a process out of all relation to its own

magnitude. In the sphere of literary genius, Milton, Flaubert, and

William Morris may help to illustrate this precious fermentative

influence of a minor morbid element in vitally powerful stocks. Without

some such ferment as this the energy of the stock, one may well

suppose, might have been confined within normal limits; the rare and

exquisite flower of genius, we know, required an abnormal stimulation;

only in this sense is there any truth at all in Lombroso's statement

that the pearl of genius develops around a germ of disease. But this is

the utmost length to which the facts allow us to go in assuming the

presence of a morbid element as a frequent constituent of genius. Even

then we only have one of the factors of genius, to which, moreover,

undue importance cannot be attached when we remember how often this

ferment is present without any resultant process of genius. And we are

in any case far removed from any of those gross nervous lesions which

all careful guardianship of the race must tend to eliminate.

Thus we are brought back to the point from which we started. Would

eugenics stamp out genius? There is no need to minimise the fact that a

certain small proportion of men of genius have displayed highly morbid

characters, nor to deny that in a large proportion of cases a slightly

morbid strain may with care be detected in the ancestry of genius. But

the influence of eugenic considerations can properly be brought to bear

only in the case of grossly degenerate stocks. Here, so far as our

knowledge extends, the parentage of genius nearly always escapes. The

destruction of genius and its creation alike elude the eugenist. If

there is a tendency in modern civilisation towards a diminution in the

manifestations of genius--which may admit of question---it can scarcely

be due to any threatened elimination of corrupt stocks. It may perhaps

more reasonably be sought in the haste and superficiality which our

present phase of urbanisation fosters, and only the most robust genius

can adequately withstand.

[1] A Danish alienist, Lange, has, however, made an attempt on a

statistical basis to show a connection between mental ability and mental

degeneracy. (F. Lange, _Degeneration in Families_, translated from the

Danish, 1907). He deals with 44 families which have provided 428 insane

or neuropathic persons within a few generations, and during the same

period a large number also of highly distinguished members, Cabinet

ministers, bishops, artists, poets, etc. But Lange admits that the forms

of insanity found in these families are of a slight and not severe

character, while it is clear that the forms of ability are also in most

cases equally slight; they are mostly "old" families, such as naturally

produce highly-trained and highly placed individuals. Moreover, Lange's

methods and style of writing are not scientifically exact, and he fails

to define precisely what he means by a "family." His investigation

indicates that there is a frequent tendency for men of ability to belong

to families which are not entirely sound, and that is a conclusion which

is not seriously disputed.

[2] Havelock Ellis, _A Study of British Genius_, 1904.

[3] Dr. Cabanès (_Indiscrétions de l'Histoire_, 3rd series) similarly

concludes that, while in temperament Napoleon may be said to belong to

the epileptic class, he was by no means an epileptic in the ordinary

sense. Kanngiesser (_Prager Medizinische Wochenschrift_, 1912, No. 27)

suggests that from his slow pulse (40 to 60) Napoleon's attacks may have

originated in the heart and vessels.

[4] Genuine epilepsy usually comes on before the age of twenty-five; it

very rarely begins after twenty-five, and never after thirty. (L.W.

Weber, _Münchener Medizinische Wochenschrift_, July 30th and Aug. 6th,

1912.) In genuine epilepsy, also, loss of consciousness accompanies the

fits; the exceptions to this rule are rare, though Audenino, a pupil of

Lombroso, who sought to extend the sphere of epilepsy, believes that

the exceptions are not so rare as is commonly supposed (_Archivio di

Psichiatria_, fasc. VI., 1906). Moreover, true epilepsy is accompanied

by a progressive mental deterioration which terminates in dementia; in

the Craig Colony for Epileptics of New York, among 3,000 epileptics

this progressive deterioration is very rarely absent (_Lancet_, March

1st, 1913); but it is not found in the distinguished men of genius who

are alleged to be epileptic. Epileptic deterioration has been

elaborately studied by MacCurdy, _Psychiatric Bulletin_, New York,

April, 1916.

[5] See, _e.g._, Elizabeth du Quesne van Gogh, _Personal Recollections

of Vincent van Gogh_, p. 46. These epileptic attacks are, however, but

vaguely mentioned, and it would seem that they only appeared during the

last years of the artist's life.

XIV

THE PRODUCTION OF ABILITY

The growing interest in eugenics, and the world-wide decline in the

birth-rate, have drawn attention to the study of the factors which

determine the production of genius in particular and high ability in

general. The interest in this question, thus freshly revived and made

more acute by the results of the Great War, is not indeed new. It is

nearly half a century since Galton wrote his famous book on the heredity

of genius, or, as he might better have described the object of his

investigation, the heredity of ability. At a later date my own _Study of

British Genius_ collectively summarised all the biological data available

concerning the parentage and birth of the most notable persons born in

England, while numerous other studies might also be named.

Such investigations are to-day acquiring a fresh importance, because,

while it is becoming realised that we are gaining a new control over the

conditions of birth, the production of children has itself gained in

importance. The world is no longer bombarded by an exuberant stream of

babies, good, bad, and indifferent in quality, with Mankind to look on

calmly at the struggle for existence among them. Whether we like it or

not, the quantity is relatively diminishing, and the question of quality

is beginning to assume a supreme significance. What are the conditions

which assure the finest quality in our children?

A German scientist, Dr. Vaerting, of Berlin, published on the eve of

the War a little book on the most favourable age in parents for the

production of children of ability (_Das günstigste elterliche

Zeugungsalter_).[1] He approaches the question entirely in this new

spirit, not as a merely academic topic of discussion, but as a practical

matter of vital importance to the welfare of society. He starts with the

assertion that "our century has been called the century of the child,"[2]

and for the child all manner of rights are now being claimed. But the

prime right of all, the right of the child to the best ability that his

parents are able to transmit to him, is never even so much as considered.

Yet this right is the root of all children's rights. And when the

mysteries of procreation have been so far revealed as to enable this

right to be won, we shall, at the same time, Dr. Vaerting adds, renew

the spiritual aspect of the nations.

The most easily ascertainable and measurable factor in the production of

ability, and certainly a factor which cannot be without significance, is

the age of the parents at the child's birth. It is this factor with which

Vaerting is mainly concerned, as illustrated by over one hundred German

men of genius concerning whom he has been able to obtain the required

data. Later on, he proposes to extend the inquiry to other nations.

Vaerting finds--and this is probably the most original, though, as we

shall see, not the most unquestionable of his findings--that the

fathers who are themselves of no notable intellectual distinction have

a decidedly more prolonged power of procreating distinguished children

than is possessed by distinguished fathers. The former, that is to say,

may become the fathers of eminent children from the period of sexual

maturity up to the age of forty-three or beyond. When, however, the

father is himself of high intellectual distinction, Vaerting finds that

he was nearly always under thirty, and usually under twenty-five years

of age at his distinguished son's birth, although the proportion of

youthful fathers in the general population is relatively small. The

eleven youngest fathers on Vaerting's list, from twenty-one to

twenty-five years of age, were (with one exception) themselves more or

less distinguished, while the fifteen oldest, from thirty-nine to sixty

years of age, were all without exception undistinguished. Among these

sons are to be found much greater names (Goethe, Bach, Kant, Bismarck,

Wagner, etc.) than are to be found among the sons of young and more

distinguished fathers, for here there is only one name (Frederick the

Great) of the same calibre. The elderly fathers belonged to large

cities and were mostly married to wives very much younger than

themselves. Vaerting notes that the most eminent geniuses have most

frequently been the sons of fathers who were not engaged in

intellectual avocations at all, but earned their livings as simple

craftsmen. He draws the conclusion from these data that strenuous

intellectual energy is much more unfavourable than hard physical labour

to the production of ability in the offspring. Intellectual workers,

therefore, he argues, must have their children when young, and we must

so modify our social ideals and economic conditions as to render this

possible. That the mother should be equally young is not, he holds,

necessary; he finds some superiority, indeed, provided the father is

young, in somewhat elderly mothers, and there were no mothers under

twenty-three. The rarity of genius among the offspring of distinguished

parents is attributed to the unfortunate tendency to marry too late,

and Vaerting finds that the distinguished men who marry late rarely

have any children at all. Speaking generally, and apart from the

production of genius, he holds that women have children too early,

before their psychic development is completed, while men have children

too late, when they have already "in the years of their highest psychic

generative fitness planted their most precious seed in the mud of the

street."

The eldest child was found to have by far the best chance of turning

out distinguished, and in this fact Vaerting finds further proof of

his argument. The third son has the next best chance, and then the

second, the comparatively bad position of the second being attributed

to the too brief interval which often follows the birth of the first

child. He also notes that of all the professions the clergy come

beyond comparison first as the parents of distinguished sons (who are,

however, rarely of the highest degree of eminence), lawyers following,

while officers in the army and physicians scarcely figure at all.

Vaerting is inclined to see in this order, especially in the

predominance of the clergy, the favourable influence of an unexhausted

reserve of energy and a habit of chastity on intellectual

procreativeness. This is one of his main conclusions.

It so happens that in my own _Study of British Genius_, with which Dr.

Vaerting was unacquainted when he made his first investigation, I dealt

on a larger scale, and perhaps with somewhat more precise method, with

many of these same questions as they are illustrated by English genius.

Vaerting's results have induced me to re-examine and to some extent to

manipulate afresh the English data. My results, like Dr. Vaerting's,

showed a special tendency for genius to appear in the eldest child,

though there was no indication of notably early marriage in the

parents.[3] I also found a similar predominance of the clergy among the

fathers and a similar deficiency of army officers and physicians. The

most frequent age of the father was thirty-two years, but the average

age of the father at the distinguished child's birth was 36.6 years,

and when the fathers were themselves distinguished their age was not,

as Vaerting found in Germany, notably low at the birth of their

distinguished sons, but higher than the general average, being 37.5

years. There have been fifteen distinguished English sons of

distinguished fathers, but instead of being nearly always under thirty

and usually under twenty-five, as Vaerting found in Germany, the

English distinguished father has only five times been under thirty and

among these five only twice under twenty-five. Moreover, precisely the

most distinguished of the sons (Francis Bacon and William Pitt) had the

oldest fathers and the least distinguished sons the youngest fathers.

I made some attempt to ascertain whether different kinds of genius

tend to be produced by fathers who were at different periods of life.

I refrained from publishing the results as I doubted whether the

numbers dealt with were sufficiently large to carry any weight. It

may, however, be worth while to record them, as possibly they are

significant. I made four classes of men of genius: (1) Men of

Religion, (2) Poets, (3) Practical Men, and (4) Scientific Men and

Sceptics. (It must not, of course, be supposed that in this last group

all the scientific men were sceptics, or all the sceptics scientific.)

The average age of the fathers at the distinguished son's birth was,

in the first group, 35 years, in the second and third groups 37 years,

and in the last group 40 years. (It may be noted, however, that the

youngest father of all in the history of British genius, aged sixteen,

produced Napier, who introduced logarithms.) It is difficult not to

believe that as regards, at all events, the two most discrepant

groups, the first and last, we here come on a significant indication.

It is not unreasonable to suppose that in the production of men of

religion, in whose activity emotion is so potent a factor, the

youthful age of the father should prove favourable, while for the

production of genius of a more coldly intellectual and analytic type

more elderly fathers are demanded. If that should prove to be so, it

would become a source of happiness to religious parents to have their

children early, while irreligious persons should be advised to delay

parentage. It is scarcely necessary to remark that the age of the

mothers is probably quite as influential as that of the fathers.

Concerning the mothers, however, we always have less precise

information. My records, so far as they go, agree with Vaerting's for

German genius, in indicating that an elderly mother is more likely to

produce a child of genius than a very youthful mother. There were only

fifteen mothers recorded under twenty-five years of age, while

thirteen were over thirty-nine years; the most frequent age of the

mothers was twenty-seven. On all these points we certainly need

controlling evidence from other countries. Thus, before we insist with

Vaerting that an elderly mother is a factor in the production of

genius, we may recall that even in Germany the mothers of Goethe and

Nietzsche were both eighteen at their distinguished sons' birth. A

rule which permits of such tremendous exceptions scarcely seems to

bear the strain of emphasis.

It must always be remembered that while the study of genius is highly

interesting, and even, it is probable, not without significance for the

general laws of heredity, we must not too hastily draw conclusions from

it to bear on practical questions of eugenics. Genius is rare and

abnormal; laws meant to apply to the general population must be based

on a study of the general population. Vaerting, who is alive to the

practical character which such problems are to-day assuming, realises

how inadequate it is to confine our study to genius. Marro, in his

valuable book on puberty, some years ago brought forward interesting

data showing the result of the age of the parents on the moral and

intellectual characters of school-children in North Italy. He found

that children with fathers below twenty-six at their birth showed the

maximum of bad conduct and the minimum of good; they also yielded the

greatest proportion of children of irregular, troublesome, or lazy

character, but not of really perverse children who were equally

distributed among fathers of all ages. The largest number of cheerful

children belonged to young fathers, while the children tended to become

more melancholy with ascending age of the fathers. Young fathers

produced the largest proportion of intelligent, as well as of

troublesome children, but when the very exceptionally intelligent

children were considered separately they were found to be more usually

the offspring of elderly fathers. As regards the mothers, Marro found

that the children of young mothers (under twenty-one) are superior,

both as regards conduct and intelligence, though the more exceptionally

intelligent children tended to belong to more mature mothers. When the

parents were both in the same age-group the immature and the elderly

groups tended to produce more children who were unsatisfactory, both as

regards conduct and intelligence, than the intermediate group.[4]

Essays in War-Time: Further Studies in the Task of Social Hygiene · 第 10 / 15 段