Any decent person who knows what warfare is can never go into battle with a whole heart.

When you have wisdom that another person knows that he needs, you give it freely. But when the other person doesn't yet know that he needs your wisdom you keep it to yourself. Food only looks good to a hungry man.

In the moment when I truly understand my enemy, understand him well enough to defeat him, then in that very moment I also love him.

Welcome to the human race. Nobody controls his own life, Ender.

What else should you be? Human beings didn't evolve brains in order to lie around on lakes. Killing's the first thing we learned. And a good thing we did, or we'd be dead, and the tigers would own the earth.

His vices were the vices of his time and culture, but his virtues transcended the milieu of his life.

You’re not a human being until you value something more than the life of your body. And the greater the thing you live and die for the greater you are.