Equilibrium is the profoundest tendency of all human activity.

Every acquisition of accommodation becomes material for assimilation, but assimilation always resists new accommodations.

In other words, knowledge of the external world begins with an immediate utilisation of things, whereas knowledge of self is stopped by this purely practical and utilitarian contact.

Scientific thought, then, is not momentary; it is not a static instance; it is a process.

The most developed science remains a continual becoming

Education, for most people, means trying to lead the child to resemble the typical adult of his society . . . but for me and no one else, education means making creators. . . . You have to make inventors, innovators...not conformists

To express the same idea in still another way, I think that human knowledge is essentially active.