If I wanted to doubt, then I could doubt endlessly, but at some point a person has to stop questioning and act, and at that point you have to trust something to be true. You have to act as if something is true, and so you choose the thing you have the most reason to believe in, you have to live in the world that you have the most hope in.

Even the most introverted person alive is constantly hungry for human association

it was all your genes that made us geniuses, mom. said peter. we sure didn't get any from dad. i heard that. father said, not looking up from the news that was being displayed on the table while he ate it would've been wasted if you hadn't

Humans invent an imaginary lover and put that mask over the face of the body in their bed. That is the tragedy of language my friend. Those who know each other only through symbolic representations are forced to imagine each other. And because their imagination is imperfect, they are often wrong.

Ender stepped under the water and rinsed himself, took the sweat of combat and let it run down the drain. All gone, except they recycled it and we'll be drinking Bonzo's blood water in the morning. All the life gone out of it, but his blood just the same, his blood and my sweat, washed down in their stupidity or cruelty or whatever it was that made them let it happen.

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.

Humanity does not ask us to be happy. It merely asks us to be brilliant on its behalf.