People should be interested in books, not their authors.

I am not mad. I am eccentric perhaps--at least certain people say so; but as regards my profession. I am very much as one says, 'all there.

It often seems to me that's all detective work is, wiping out your false starts and beginning again." Yes, it is very true, that. And it is just what some people will not do. They conceive a certain theory, and everything has to fit into that theory. If one little fact will not fit it, they throw it aside. But it is always the facts that will not fit in that are significant.

You cannot mix up sentiment and reason.

Men don't understand how their mannerisms can get on women's nerves so that you feel you just have to snap.

I suppose without curiosity a man would be a tortoise. Very comfortable life, a tortoise has.

The rottenness comes from within.