Common-sense knowledge is prompt, categorical, and inexact.

Language is, without a doubt, the most momentous and at the same time the most mysterious product of the human mind.

What is artistically good is whatever articulates and presents feeling to our understanding.

Music is our myth of the inner life.

To trace the development of mind from earliest times ... requires ... not a categorical concept, but a functional one.... The most promising operational principle for this purpose is the principle of individuation.

The dancer, or dancers, must transform the stage for the audience as well as for themselves into an autonomous, complete, virtual realm, and all motions into a play of visible forces in unbroken, virtual time...Both space and time, as perceptible factors, disappear almost entirely in the dance illusion.

The limits of thought are not so much set from outside, by the fullness or poverty of experiences that meet the mind, as from within, by the power of conception, the wealth of formulative notions with which the mind meets experiences.