Language exists only when it is listened to as well as spoken. The hearer is an indispensable partner.

It is merely a linguistic peculiarity, not a logical fact, that we say "that is red" instead of "that reddens," either in the sense of growing, becoming, red, or in the sense of making something else red.

A person who is trained to consider his actions, to undertake them deliberately, is in so far forth disciplined. Add to this ability a power to endure in an intelligently chosen course in the face of distraction, confusion, and difficulty, and you have the essence of discipline.

Not only does social life demand teaching and learning for its own permanence, but the very process of living together educates. It enlarges and enlightens experience; it stimulates and enriches imagination; it creates responsibility for accuracy and vividness of statement and thought.

Continuity of life means continual readaptation of the environment to the needs of living organisms.

Just because life signifies not bare passive existence (supposing there is such a thing), but a way of acting, environment or medium signifies what enters into this activity as a sustaining or frustrating condition.

The acquisition however perfectly of skills is not an end in itself. They are things to be put to use as a contribution to a common and shared life.