To love truth for truth's sake is the principal part of human perfection in this world, and the seed-plot of read more

To love truth for truth's sake is the principal part of human perfection in this world, and the seed-plot of all other virtues.

Problems are only opportunities in work clothes.

Problems are only opportunities in work clothes.

Custom, that unwritten law, By which the people keep even kings in awe.

Custom, that unwritten law, By which the people keep even kings in awe.

There is no truth sure enough to justify persecution.

There is no truth sure enough to justify persecution.

If there is no struggle there is no progress.

If there is no struggle there is no progress.

Civilized man has always had a great inclination to read his conceptions and feelings into the mind of primitive man; read more

Civilized man has always had a great inclination to read his conceptions and feelings into the mind of primitive man; but he has only a limited capacity for understanding the latter's undeveloped mental life and for interpreting, as it were, his nature.

Jefferson thought schools would produce free men: we prove him right by putting dropouts in jail.

Jefferson thought schools would produce free men: we prove him right by putting dropouts in jail.

Man is the animal that intends to shoot himself out into interplanetary space, after having given up on the problem read more

Man is the animal that intends to shoot himself out into interplanetary space, after having given up on the problem of an efficient way to get himself five miles to work and back each day.

Spiritual stagnation ensues when man's environment becomes unpredictable or when his inner life is made wholly predictable.

Spiritual stagnation ensues when man's environment becomes unpredictable or when his inner life is made wholly predictable.