Those who aren't making mistakes probably aren't making anything.

An intense anticipation itself transforms possibility into reality; our desires being often but precursors of the things which we are capable of performing.

The Romans rightly employed the same word (virtus) to designate courage, which is, in a physical sense, what the other is in a moral; the highest virtue of all being victory over ourselves.

Obedience, submission, discipline, courage--these are among the characteristics which make a man.

Help from without is often enfeebling in its effects, but help from within invariably invigorates.

Purposes, like eggs, unless they be hatched into action, will run into rottenness.

Alexander the Great valued learning so highly, that he used to say he was more indebted to Aristotle for giving him knowledge than to his father Philip for life.