I never got good at predicting what millions of people will suddenly decide is rational.

I don't run ahead of science. I follow as close as I can, and I peer over their shoulders while the scientists are watching their feet.

I'd repair our education system or replace it with something that works.

Exercise is wonderful. I could sit all day watching it.

I can calculate the motions of the heavenly bodies, but not the madness of people.

You cannot make a man by standing a sheep on its hind-legs. But by standing a whole flock of sheep in that position you can make a crowd of men. If man were no…

A crowd, proportionately to its size, magnifies all that in its units pertains to the emotions, and diminishes all that in them pertains to thought.