The real question is not whether machines think but whether men do. The mystery which surrounds a thinking machine already surrounds a thinking man.

The consequences of an act affect the probability of its occurring again.

A scientist may not be sure of the answer, but he's often sure he can find one. And that's a condition which is clearly not enjoyed by philosophy.

Once in a while a new government initiates a program to put power to better use, but its success or failure never really proves anything. In science, experiments are designed, checked, altered, repeated-- but not in politics... We have no real cumulative knowledge. History tells us nothing. That's the tragedy of a political reformer.

In a world of complete economic equality, you get and keep the affections you deserve. You can’t buy love with gifts or favors, you can’t hold love by raising an inadequate child, and you can’t be secure in love by serving as a good scrub woman or a good provider.