Children of the Mind (Ender's Saga, #4)

by Orson Scott Card

“You say that because you have no children, Greguinho. But none of it is wasted. The child you hold in your arms for only a day before he dies, that is not wasted, because that one day is enough of a purpose in itself. Entropy has been thrown back for an hour, a day, a week, a month. Just because we might all die here on this little world does not undo the lives before the deaths.”

Changing the world is good for those who want their names in books. But being happy, that is for those who write their names in the lives of others, and hold the hearts of others as the treasure most dear.