“There is nothing in which deduction is so necessary as in religion.”

The grand thing is to be able to reason backwards.

I get in the dumps at times, and don’t open my mouth for days on end. You must not think I am sulky when I do that. Just let me alone, and I’ll soon be right.

It is, I admit, mere imagination; but how often is imagination the mother of truth?

We balance probabilities and choose the most likely. It is the scientific use of the imagination.

There are no fools so troublesome as those who have some wit.

There’s a light in a woman’s eyes that speaks louder than words.

Of all ghosts the ghosts of our old loves are the worst.

When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth.

I wanted to end the world, but I’ll settle for ending yours.

It’s every man’s business to see justice done.

It has long been an axiom of mine that the little things are infinitely the most important.

I never can resist a touch of the dramatic.

I am a brain, The rest of me is a mere appendix.

We would not dare to conceive the things which are really mere common places of existence.

A man should keep his little brain attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber room of his library, where he can get it if he wants it.

Evil indeed is the man who has not one woman to mourn him.

If men were angels, no government would be necessary.

A mixtape is for the street, it’s something you without necessarily thinking about it because you have to stay in the game. It’s like writing an e-mail saying hello to your friends.

Caution and investigation are a necessary armor against error and imposition.

Never let yourself be persuaded that any one Great Man, any one leader, is necessary to the salvation of America. When America consists of one leader and 158 million followers, it will no longer be America.

A philosopher once said, It is necessary for the very existence of science that the same conditions always produce the same results. Well, they don’t!

Philosophers say a great deal about what is absolutely necessary for science, and it is always, so far as one can see, rather naive, and probably wrong.

The world could be fixed of its problems if every child understood the necessity of their existence.

Later I learned to improve my forecasting—if necessary by asking the visitor in advance what subjects he intended to raise with Nixon.