The object of a full-dress biography is to present as complete
a picture as may be of a man and his work, the influence of his
character upon his achievement, the struggle with opposing influences
to carry out some guiding purpose or great idea. With abundant
documents at hand the individual development, the action of events
upon character, and of character upon events, can be shown in the
spontaneous freedom of letters, as well as in considered publications.
But this little book is not a full-dress biography, although it may
induce readers to turn to the larger _Life and Letters_, in which
(or in the _Aphorisms and Reflections of T.H. Huxley_) facts and
quotations can be turned up by means of the index; it is designed
rather as a character sketch, to show not so much the work done as
what manner of man Huxley was, and the spirit in which he undertook
that work. It will not be a history of his scientific investigations
or his philosophical researches; it will be personal, while from the
personal side illustrating his attitude towards his scientific and
philosophical thought.