Identification of rhythm as the casual counterpart of life; wherever there is some life, only perceptible to us when the analogies are sufficiently close.

In a sense, knowledge shrinks as wisdom grows: for details are swallowed up in principles.

From the very beginning of his education, the child should experience the joy of discovery.

Every philosophy is tinged with the coloring of some secret imaginative background, which never emerges explicitly into its train of reasoning.

There will be some fundamental assumptions which adherents of all the variant systems within the epoch unconsciously presuppose. Such assumptions appear so obvious that people do not know what they are assuming because no other way of putting things has ever occurred to them. With these assumptions a certain limited number of types of philosophic systems are possible, and this group of systems constitutes the philosophy of the epoch.

No Roman ever died in contemplation over a geometrical diagram.

Ideas won't keep. Something must be done about them.