We are what we repeatedly do. Excellence, then, is not an act, but a habit.

Every vice was once a virtue, and may become respectable again, just as hatred becomes respectable in wartime.

Those who know nothing about history are doomed forever to repeat it.

The fear of capitalism has compelled socialism to widen freedom, and the fear of socialism has compelled capitalism to increase equality. East is West and West is East, and soon the twain will meet.

Civilization is the order and freedom is promoting cultural activity.

Rome remained great as long as she had enemies who forced her to unity, vision, and heroism. When she had overcome them all she flourished for a moment and then began to die.

Science tells us how to heal and how to kill; it reduces our death rate in retail and then kills us wholesale in war; but only wisdom - desire coordinated in the light of all experience - can tell us when to heal and when to kill.