I was standing in our dining-room thinking of nothing in particular, when a cablegram was put into my hand. It said, 'Susy was peacefully released today.' It is one of the mysteries of our nature that a man, all unprepared, can receive a thunder-stroke like that and live.

In statesmanship get formalities right, never mind about the moralities.

The art of prophecy is very difficult, especially with respect to the future.

I pledged myself to smoke but one cigar a day. I kept the cigar waiting until bedtime, then I had a luxurious time with it. But desire persecuted me every day and all day long. I found myself hunting for larger cigars...within the month my cigar had grown to such proportions I could have used it as a crutch.

Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts. Broad, wholesome, charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all one's lifetime.

Man is the Reasoning Animal. Such is the claim. I think it is open to dispute. Indeed, my experiments have proven to me that he is the Unreasoning Animal... In truth, man is incurably foolish. Simple things which the other animals easily learn, he is incapable of learning. Among my experiments was this. In an hour I taught a cat and a dog to be friends. I put them in a cage. In another hour I taught them to be friends with a rabbit. In the course of two days I was able to add a fox, a goose, a squirrel and some doves. Finally a monkey. They lived together in peace; even affectionately.

Some things you can't find out; but you will never know you can't by guessing and supposing: no, you have to be patient and go on experimenting until you find out that you can't find out.