Failure is instructive. The person who really thinks learns quite as much from his failures as from his successes. Genuine ignorance is profitable because it is likely to be accompanied by humility, curiosity, and open-mindedness; whereas ability to repeat catch-phrases, can't terms, familiar propositions, gives the conceit of learning and coats the mind with varnish waterproof to new ideas.

Schools should take part in the great work of construction and organization that will have to be done.

A man can be prevented from breaking into other persons' houses by shutting him up, but shutting him up may not alter his disposition to commit burglary.

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.

The interaction of knowledge and skills with experience is key to learning.

...the moment of passage from disturbance into harmony is that of intensest life.

It is commonplace that a problem stated is well on its way to solution, for statement of the nature of a problem signifies that the underlying quality is being transformed into determinate distinctions of terms and relations or has become an object of articulate thought.