Every nation ridicules other nations, and all are right.

The fourfold root of the principle of sufficent reason is "Anything perceived has a cause. All conclusions have premises. All effects have causes. All actions have motives.

A man's face as a rule says more, and more interesting things, than his mouth, for it is a compendium of everything his mouth will ever say, in that it is the monogram of all this man's thoughts and aspirations.

Ignorance is degrading only when found in company with great riches.

Every truth passes through 3 stages before it is recognized 1)ridicule 2) opposition 3) accepted as self-evident.

For our improvement we need a mirror.

This actual world of what is knowable, in which we are and which is in us, remains both the material and the limit of our consideration.