There came into the world an unlimited abundance of everything people need. But people need everything except unlimited abundance.

You can have a revolution wherever you like, except in a government office; even were the world to come to an end, you'd have to destroy the universe first and then government offices.

Robots of the world, you are ordered to exterminate the human race. Do not spare the men. Do not spare the women. Preserve only the factories, railroads, machines, mines, and raw materials. Destroy everything else. Then return to work. Work must not cease.

People should be a little loony, Helena. That's the best thing about them.

If dogs could talk, perhaps we would find it as hard to get along with them as we do with people.

One never knows whether people have principles on principle or whether for their own personal satisfaction.