It is bad luck to be superstitious.
Andrew W. Mathis

To the man who only has a hammer, everything he encounters begins to look like a nail.
Abraham Maslow

Blessed is he who expects nothing, for he shall never be disappointed.
Alexander Pope

It is easier to fight for one’s principles than to live up to them.
Alfred Adler

Acquaintance, n.: A person whom we know well enough to borrow from, but not well enough to lend to.
Ambrose Bierce

Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away.
Antoine de Saint-Exupéry

It is the mark of an educated mind to be able to entertain a thought without accepting it.
Aristotle

The only thing that interferes with my learning is my education.
Albert Einstein

The person who reads too much and uses his brain too little will fall into lazy habits of thinking.
Albert Einstein

When you sit with a nice girl for two hours, you think it’s only a minute. But when you sit on a hot stove for a minute, you think it’s two hours. That’s relativity.
Albert Einstein

When everyone is against you, it means that you are absolutely wrong– or absolutely right.
Albert Guinon

Not everything that can be counted counts, and not everything that counts can be counted.
Albert Einstein

Imagination is more important than knowledge. For knowledge is limited to all we now know and understand, while imagination embraces the entire world, and all there ever will be to know and understand.
Albert Einstein
Nearly all men can stand adversity, but if you want to test a man’s character, give him power.
Abraham Lincoln

Better to remain silent and be thought a fool than to speak out and remove all doubt.
Abraham Lincoln

We don’t see things as they are. We see things as we are.
Anais Nin

People cannot discover new lands until they have the courage to lose sight of the shore.
André Gide

History teaches us that men and nations behave wisely once they have exhausted all other alternatives.
Abba Eban

I use emotion for the many and reserve reason for the few.
Adolf Hitler

Do not look where you fell, but where you slipped.
African proverb

Any company large enough to have a research lab is too large to listen to it.
Alan Kay

Insanity: doing the same thing over and over again and expecting different results.
Albert Einstein