We cannot think of ourselves save as to some extent social being. Hence, we cannot separate the idea of ourselves and our own good from our idea of others and their good.

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.

To have an idea of a thing is not just to get certain sensations from it. It is to be able to respond to the thing in view of its place in an inclusive scheme of action; it is to foresee the drift and probable consequence of the action of the thing upon us and of our action upon it.

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

Old ideas give way slowly; for they are more than abstract logical forms and categories. They are habits, predispositions, deeply ingrained attitudes of aversion and preference.

The path of least resistance and least trouble is a mental rut already made. It requires troublesome work to undertake the alternation of old beliefs. Self-conceit often regards it as a sign of weakness to admit that a belief to which we have once committed ourselves is wrong. We get so identified with an idea that it is literally a pet notion and we rise to its defense and stop our eyes and ears to anything different.

The theory of the method of knowing which is advanced in these pages may be termed pragmatic. ... Only that which has been organized into our disposition so as to enable us to adapt the environment to our needs and adapt our aims and desires to the situation in which we live is really knowledge.