Evil is impotent and has no power but that which we let it extort from us.

Man cannot survive except by gaining knowledge, and reason is his only means to gain it.

If there are degrees of evil, it is hard to say who is more contemptible: the brute who assumes the right to force the mind of others or the moral degenerate who grants to others the right to force his mind.

As there can be no causeless wealth, so there can be no causeless love or any sort of causeless emotion.

Evil is impotent and has no power but that which we let it extort from us.

Whenever a man denounces the mind, it is because his goal is of a nature the mind would not permit him to confess.

A trader does not squander his body as fodder or his soul as alms.