Ordinarily pleasure and pain are regarded as different from sensations.

Bodies do not produce sensations, but complexes of elements (complexes of sensations) make up bodies.

When I recall today my early youth, I should take the boy that I then was, with the exception of a few individual features, for a different person, were it not for the existence of the chain of memories.

A movement that we will to execute is never more than a represented movement, and appears in a different domain from that of the executed movement, which always takes place when the image is vivid enough.

Without renouncing the support of physics, it is possible for the physiology of the senses, not only to pursue its own course of development, but also to afford to physical science itself powerful assistance.

I can accept the theory of relativity as little as I can accept the existence of atoms.