He who is in love with himself has at least this advantage - he won't encounter many rivals.

Non cogitant, ergo non sunt.

It is almost everywhere the case that soon after it is begotten the greater part of human wisdom is laid to rest in repositories.

A good metaphor is something even the police should keep an eye on.

Reason now gazes above the realm of the dark but warm feelings as the Alpine peaks do above the clouds. They behold the sun more clearly and distinctly, but they are cold and unfruitful.

Delight at having understood a very abstract and obscure system leads most people to believe in the truth of what it demonstrates.

Cautiousness in judgment is nowadays to be recommended to each and every one: if we gained only one incontestable truth every ten years from each of our philosophical writers the harvest we reaped would be sufficient.