I call him free who is led solely by reason.

To understand something is to be delivered of it.

I have resolved to demonstrate by a certain and undoubted course of argument, or to deduce from the very condition of human nature, not what is new and unheard of, but only such things as agree best with practice.

The more clearly you understand yourself and your emotions, the more you become a lover of what is.

In proportion as we endeavor to live according to the guidance of reason, shall we strive as much as possible to depend less on hope, to liberate ourselves from fear, to rule fortune, and to direct our actions by the sure counsels of reason.

He who seeks equality between unequals seeks an absurdity.

He who has a true idea, knows at that same time that he has a true idea, nor can he doubt concerning the truth of the thing.