A moral being is one who is capable of reflecting on his past actions and their motives - of approv

A moral being is one who is capable of reflecting on his past actions and their motives - of approving of some and disapproving of others.

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An American monkey, after getting drunk on brandy, would never touch it again, and thus is much wiser than most men.

The very essence of instinct is that it's followed independently of reason.

It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.

Man tends to increase at a greater rate than his means of subsistence.

Past thinking and methods did not prevent world wars. Future thinking must prevent wars.

The only way to escape the corruptible effect of praise is to go on working.

Not I, not anyone else, can travel that road for you, you must travel it for yourself.

Twenty years from now you will be more disappointed by the things you didn’t do than by the ones you did do.