After people have repeated a phrase a great number of times, they begin to realize it has meaning and may even be true.

I never yet heard of a useless thing that was not ground out of existence by evolution sooner or later. Did you? And pain gets needless.

Statistical thinking will one day be as necessary for efficient citizenship as the ability to read and write!

If your life doesn't end in failure, you haven't reached high enough. So it was failure I had to achieve.

Go away... I'm alright.

When the history of civilization is written, it will be a biological history and Margaret Sanger will be its heroine.

With wine and food, the confidence of my own table, and the necessity of reassuring my wife, I grew by insensible degrees courageous and secure.