He's not a killer. He just wins... Thoroughly

Your dream is a good one. [. . .] The desire that is the very root of life itself: To grow until all the space you can see is part of you, under your control. It's the desire for greatness.

Science fiction is about what could be but isn't; fantasy is about what couldn't be.

There was no name for the disease; his body had gone insane, forgotten the blueprint by which human beings were built. Even now the disease still lives on in his children. Not in our bodies, but in our souls. We exist where normal human children are expected to be; we're even shaped the same. But each of us in our own way has been replaced by an imitation child, shaped out of a twisted, fetid, lipidous goiter that grew out of Father's soul.

Before we are citizens, we are children, and it is as children that we come to understand freedom and authority, liberty and duty.

You understand that the piggies are animals, and you no more condemn them for murdering Libo and Pipo than you condemn a cabra for shewing up capim." That's right," said Miro. Ender smiled. "And that's why you'll never learn anything from them. Because you think of them as animals.

This is what historians usually do, quibble about cause and effect when the point is, there are times when the world is in flux and the right voice in the right place can move the world. Thomas Paine and Ben Franklin, for instance. Bismark. Lenin.