A mathematician is only perfect insofar as he is a perfect man, sensitive to the beauty of truth.

No two men see the world exactly alike, and different temperaments will apply in different ways a principle that they both acknowledge.

Every decided colour does a certain violence to the eye, and forces the organ to opposition.

The misfortune in the state is, that nobody can enjoy life in peace, but that everybody must govern; and in art, that nobody will enjoy what has been produced, but that every one wants to reproduce on his own account.

There are three classes of readers; some enjoy without judgment; others judge without enjoyment; and some there are who judge while they enjoy, and enjoy while they judge. The latter class reproduces the work of art on which it is engaged. Its numbers are very small.

The more one knows, the more one comprehends, the more one realizes that everything turns in a circle.

The experiences show us just as we are; they make us see our own defects.