Knowledge is always accompanied with accessories of emotion and purpose.

Algebra reverses the relative importance of the factors in ordinary language.

The difference between ancients and moderns is that the ancients asked what have we experienced, and moderns asked what can we experience.

Art attracts us only by what it reveals of our most secret self.

Life is complex in its expression, involving more than percipience, namely desire, emotion, will, and feeling.

Nobody has a right to speak more clearly than he thinks.

A science which hesitates to forget its founders is lost.