The mind of your own enemy, the pupil, is working away from you, as keenly and eagerly as is the mind of the commander on the other side from the scientific general. Just what the respective enemies want and think, and what they know or do not know, are as hard things for the teachers as for the general to find out.

The greatest revolution of our generation is the discovery that human beings, by changing the inner attitudes of their minds, can change the outer aspects of their lives.

Truth lives, in fact, for the most part on a credit system

The stream of thought flows on; but most of its segments fall into the bottomless abyss of oblivion. Of some, no memory survives the instant of their passage. Of others, it is confined to a few moments, hours or days. Others, again, leave vestiges which are indestructible, and by means of which they may be recalled as long as life endures.

What a magnificent land and race is this Britain! Everything about them is of better quality than the corresponding thing in the U.S.... Yet I believe (or suspect) that ours is eventually the bigger destiny, if we can only succeed in living up to it.

Compared with what we ought to be, we are only half awake. Our fires are damped, our drafts are checked. We are making use of only a small part of our possible mental and physical resources.

Geniuses are commonly believed to excel other men in their power of sustained attention . . . But it is their genius making them attentive, not their attention making geniuses of them.