For the majority of us, the past is a regret, the future an experiment

The equator was wisely put where it is, because if it had been run through Europe all the kings would have tried to grab it.

When in doubt, tell the truth. That maxim I did invent, but never expected it to be applied to me. I did say, "When you are in doubt," but when I am in doubt myself I use more sagacity.

If we learned to walk and talk the way we learn to read and write, everyone would limp and stutter.

The problem with education is school.

It's not as bad as it sounds.

I never could do anything with figures, never had any talent for mathematics, never accomplished anything in my efforts at that rugged study, and to-day the only mathematics I know is multiplication, and the minute I get away up in that, as soon as I reach nine times seven- [He lapsed into deep thought, trying to figure nine times seven. Mr. McKelway whispered the answer to him.] I've got it now. It's eighty-four. Well, I can get that far all right with a little hesitation. After that I am uncertain, and I can't manage a statistic.