Nothing in nature is by chance... Something appears to be chance only because of our lack of knowledge.

Fame has also this great drawback, that if we pursue it, we must direct our lives so as to please the fancy of men.

If we conceive that anyone loves, desires, or hates anything which we ourselves love, desire, or hate, we shall thereupon regard the thing in question with more steadfast love, etc. On the contrary, if we think that anyone shrinks from something that we love, we shall undergo vacillation of the soul.

A free man, who lives among ignorant people, tries as much as he can to refuse their benefits. .. He who lives under the guidance of reason endeavours as much as possible to repay his fellow's hatred, rage, contempt, etc. with love and nobleness.

Freedom is absolutely necessary for the progress in science and the liberal arts.

Whatever increases, decreases, limits or extends the body's power of action, increases decreases, limits, or extends the mind's power of action. And whatever increases, decreases, limits, or extends the mind's power of action, also increases, decreases, limits, or extends the body's power of action.

Whatsoever is contrary to nature is contrary to reason, and whatsoever is contrary to reason is absurd.