“Dreadful will be the day when the world becomes contented, when one great universal satisfaction spreads itself over the world. Sad will be the day for every man when he becomes absolutely contented with the life that he is living, with the thoughts that he is thinking, with the deeds that he is doing, when there is not forever beating at the doors of his soul some great desire to do something larger which he knows that he was meant and made to do because he is a child of God.”

“Maezr smiled. "A hundred years ago, Ender, we found out some things. That when a commander's life is in danger he becomes afraid, and fear slows down his thinking. When a commander knows that he's killing people, he becomes cautious or insane, and neither of those help him do well. And when he's mature, when he has responsibilities and an understanding of the world, he becomes cautious and sluggish and can't do his job. So we trained children, who didn't know anything but the game, and never knew when it would become real. That was the theory, and you proved that the theory worked.”

“The pitch to which he was aroused was tremendous. All the fighting blood of his breed was up in him and surging through him. This was living., though he did not know it. He was realizing his own meaning in the world; he was doing that for which he was made.... He was justifying his existence, than which life can do no greater; for life achieves its summit when it does to the uttermost that which it was equipped to do.”

“When you run with the Doctor, it feels like it'll never end. But however hard you try you can't run forever. Everybody knows that everybody dies and nobody knows it like the Doctor. But I do think that all the skies of all the worlds might just turn dark if he ever for one moment, accepts it. Everybody knows that everybody dies. But not every day. Not today. Some days are special. Some days are so, so blessed. Some days, nobody dies at all. (In the library, the Doctor walks back to the TARDIS. He stops, looking at the doors. Then he raises his hand, and stands there poised like that for a long moment. Finally he snaps his fingers. The doors open. He smiles slowly and walks in, joining Donna. Then he snaps his fingers again, and the doors close. River's voice continues over this.) Now and then, every once in a very long while, every day in a million days, when the wind stands fair, and the Doctor comes to call... everybody lives.”

“She had learned to pay attention to the variations in Rokan's smiles. There was the sideways half-smile when he found something amusing; the slow, contented smile that appeared only rarely these days; and the wide, dazzling, unrestrained smile she had so far seen only twice, when he first came for her in the Mistwood and when they watched the hawk soar against the sky. And then there was this one, the reason for her watchfulness: the impish grin that meant he wanted to do something he knew was stupid and was going to do it anyhow.”

“You differ from a great man in only one respect: the great man was once a very little man, but he developed one important quality: he recognized the smallness and narrowness of his thoughts and actions. Under the pressure of some task that meant a great deal to him, he learned to see how his smallness, his pettiness endangered his happiness. In other words, a great man knows when and in what way he is a little man. A little man does not know he is little and is afraid to know. He hides his pettiness and narrowness behind illusions of strength and greatness, someone else's strength and greatness. He's proud of his great generals but not of himself. He admires an idea he has not had, not one he has had. The less he understands something, the more firmly he believes in it. And the better he understands an idea, the less he believes in it.”