Thus nature was reclaimed from the imagination. The first fantastic
conception of things gave way before the moral; the moral in turn gave
way before the natural; and at last there was left but one small tract
of jungle where the theory of law had failed to penetrate,--the doings
and characters of human creatures themselves.

There, and only there, amidst the conflicts of reason and emotion,
conscience and desire, spiritual forces were still conceived to exist.
Cause and effect were not traceable when there was a free volition to
disturb the connection. In all other things, from a given set of
conditions the consequences necessarily followed. With man, the word
"law" changed its meaning; and instead of a fixed order, which he could
not choose but follow, it became a moral precept, which he might disobey
if he dared.

This it was which Mr. Buckle disbelieved. The economy which prevailed
throughout nature, he thought it very unlikely should admit of this
exception. He considered that human beings acted necessarily from the
impulse of outward circumstances upon their mental and bodily condition
at any given moment. Every man, he said, acted from a motive; and his
conduct was determined by the motive which affected him most powerfully.
Every man naturally desires what he supposes to be good for him; but, to
do well, he must know well. He will eat poison, so long as he does not
know that it is poison. Let him see that it will kill him, and he will
not touch it. The question was not of moral right and wrong. Once let
him be thoroughly made to feel that the thing is destructive, and he
will leave it alone by the law of his nature. His virtues are the result
of knowledge; his faults, the necessary consequence of the want of it. A
boy desires to draw. He knows nothing about it: he draws men like trees
or houses, with their centre of gravity anywhere. He makes mistakes