Above all we need, particularly as children, the reassuring presence of a visible community, an intimate group that enfolds us with understanding and love, and that becomes an object of our spontaneous loyalty, as a criterion and point of reference for the rest of the human race.

However far modern science and techniques have fallen short of their inherent possibilities, they have taught mankind at least one lesson; nothing is impossible.

Growth and self-transformation cannot be delegated.

A day spent without the sight or sound of beauty, the contemplation of mystery, or the search of truth or perfection is a poverty-stricken day; and a succession of such days is fatal to human life.

One of the functions of intelligence is to take account of the dangers that come from trusting solely to the intelligence.

In vulgar usage, progress has come to mean limitless movement in space and time, accompanied, necessarily, by an equally limitless command of energy: culminating in limitless destruction.

Nothing is unthinkable, nothing impossible to the balanced person, provided it comes out of the needs of life and is dedicated to life's further development.