He who never made a mistake, never made a discovery.

Sell your cleverness and buy bewilderment.

Dare to risk public criticism.

Anxiety is the dizziness of freedom.

Obsession is an attractive thing. People who are really, really interested and good at one thing and smart are attractive, if they're men.

Racism is a much more clandestine, much more hidden kind of phenomenon, but at the same time it's perhaps far more terrible than it's ever been.

No flying machine will ever fly from New York to Paris.

I got rabies shots for biting the head off a bat but that`s OK - the bat had to get Ozzy shots.

External nature is only internal nature writ large.

Authority, without any condition and reservation, belongs to the nation.

An original idea. That can't be too hard. The library must be full of them.

For the meaning of life differs from man to man, from day to day and from hour to hour. What matters, therefore, is not the meaning of life in general but rather the specific meaning of a person's life at a given moment.

At the bottom of enmity between strangers lies indifference.

I have noticed that nothing I have never said ever did me any harm.

Sometimes glass glitters more than diamonds because it has more to prove.

Parents wonder why the streams are bitter, when they themselves have poisoned the fountain.

Delay always breeds danger. To protract a great design is often to ruin it.

There is no real ending. It's just the place where you stop the story.

The paranoid is never entirely mistaken.

I recommend that the Statue of Liberty be supplemented by a Statue of Responsibility on the west coast.

A mediocre idea that generates enthusiasm will go further than a great idea that inspires no one.