If everything that happens has a cause, it is possible to discover
such fact's proximate causes, and to them refer this fact. People go
downtown, for example, to see a person, or collect a bill. In all cases
it is a matter of choice, followed by decision, and the determination
to carry it out. There are, indeed, certain facts usually derived
from the arts; as for instance the re-establishment of health may be
referred to medicine and the physician. Again, when a man has become
rich, this is due to his finding some treasure, or receiving some
donation, to working, or exercising some lucrative profession. The
birth of a child depends on its father, and the concourse of exterior
circumstances, which, by the concatenation of causes and effects,
favored his procreation; for example, right food, or even a still more
distant cause, the fertility of the mother, or, still more generally,
of nature (or, in general, it is usual to assign natural causes).