Nature can't evolve a species that hasn't the will to survive. Individuals might be bred to sacrifice themselves, but the race as a whole can never cease to exist.

Rumors are the sauce of a dry life.

That is the earth, he thought. Not a globe thousands of kilometers around, but a forest with a shining lake, a house hidden at the crest of a hill, high in the trees, a grassy slope leading upwards from the water, fish leaping and birds strafing to take the bugs that lived at the border between water and sky. Earth was the constant noise of crickets, and winds, and birds

Early to bed and early to rise," Mazer intoned, "makes a man stupid and blind in the eyes.

Individual human beings are all tools, that the others use to help us all survive.” “That’s a lie.” “No. It’s just a half truth. You can worry about the other half after we win this war.

If a pig goes upon the threshing-floor, or a field, or a garden, and the owner of the meadow, or the field, or the garden smites it so that it die, he shall give it back to its owner; but if he does not give it back, he becomes a thief.

In order to learn, one must change one's mind.