As regards the individual nature, woman is defective and misbegotten, for the active power of the male seed tends to the production of a perfect likeness in the masculine sex; while the production of a woman comes from defect in the active power.

It is a sin directly against one's neighbour, since one man cannot over-abound in external riches, without another man lacking them.

The greatest kindness one can render to any man consists in leading him from error to truth.

Friendship is the source of the greatest pleasures, and without friends even the most agreeable pursuits become tedious.

All my words are but chaff next to the faith of a simple man.

Reason in man is rather like God in the world.

Practical sciences proceed by building up; theoretical science by resolving into components.