Perhaps the greatest of all pedagogical fallacies is the notion that a person learns only the particular thing he is studying at the time.

Teaching may be compared to selling commodities. No one can sell unless somebody buys.

Democracy has to be born anew every generation, and education is its midwife.

The Professor took the old practices and studied them, worked out their mechanical principles and then devised a graded scientific set of tricks, but is based on the elementary laws of mechanics, a study of the equilibrium of the human body, the ways in which it is disturbed, how to recover your own and take advantage of the shifting of the center of gravity of the other person. The first thing that is taught is how to fall down without being hurt, that alone is worth the price of admission and ought to be taught in all our gyms.

Understanding one another means that objects, including sounds, have the same value for both with respect to carrying on a common pursuit.

If we teach today’s students as we taught yesterday’s, we rob them of tomorrow.

Cooperation called fraternity in the classic French formula is as much a part of the democratic ideal as is personal initiative. That cultural conditions were allowed to develop (markedly so in the economic phase) which subordinated cooperativeness to liberty and equality serves to explain the decline in the two latter.