Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

If you can't explain it simply, you don't understand it well enough.

Life is like riding a bicycle. To keep your balance, you must keep moving.

We cannot solve our problems with the same thinking we used when we created them.

Look deep into nature, and then you will understand everything better.

A person who never made a mistake never tried anything new.

Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.

Coincidence is God's way of remaining anonymous.

Strive not to be a success, but rather to be of value.

We can't solve problems by using the same kind of thinking we used when we created them.

It's not that I'm so smart, it's just that I stay with problems longer.

Logic will get you from A to B. Imagination will take you everywhere.

No problem can be solved from the same level of consciousness that created it.

I have no special talent. I am only passionately curious.

I never think of the future - it comes soon enough.

Only a life lived for others is a life worthwhile.

The true sign of intelligence is not knowledge but imagination.

Reality is merely an illusion, albeit a very persistent one.

Imagination is everything. It is the preview of life's coming attractions.

The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it.

Anyone who has never made a mistake has never tried anything new.

Education is what remains after one has forgotten what one has learned in school.

It is the supreme art of the teacher to awaken joy in creative expression and knowledge.

Weakness of attitude becomes weakness of character.

If we knew what it was we were doing, it would not be called research, would it?

The only source of knowledge is experience.

No amount of experimentation can ever prove me right; a single experiment can prove me wrong.

The distinction between the past, present and future is only a stubbornly persistent illusion.

Any man who can drive safely while kissing a pretty girl is simply not giving the kiss the attention it deserves.

You can't blame gravity for falling in love.

Try not to become a man of success, but rather try to become a man of value.

Peace cannot be kept by force; it can only be achieved by understanding.

Everything should be made as simple as possible, but not simpler.

The only reason for time is so that everything doesn't happen at once.

Great spirits have always encountered violent opposition from mediocre minds.

Common sense is the collection of prejudices acquired by age eighteen.

Once we accept our limits, we go beyond them.

The value of a man should be seen in what he gives and not in what he is able to receive.

Nationalism is an infantile disease. It is the measles of mankind.

If people are good only because they fear punishment, and hope for reward, then we are a sorry lot indeed.

A question that sometimes drives me hazy: am I or are the others crazy?

I live in that solitude which is painful in youth, but delicious in the years of maturity.

I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.

The monotony and solitude of a quiet life stimulates the creative mind.

The important thing is not to stop questioning. Curiosity has its own reason for existing.

Whoever is careless with the truth in small matters cannot be trusted with important matters.

Gravitation is not responsible for people falling in love.

Intellectuals solve problems, geniuses prevent them.

The gift of fantasy has meant more to me than my talent for absorbing positive knowledge.

There are two ways to live: you can live as if nothing is a miracle; you can live as if everything is a miracle.

A table, a chair, a bowl of fruit and a violin; what else does a man need to be happy?

Most people say that it is the intellect which makes a great scientist. They are wrong: it is character.

Never do anything against conscience even if the state demands it.

The environment is everything that isn't me.

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

In matters of truth and justice, there is no difference between large and small problems, for issues concerning the treatment of people are all the same.

He who can no longer pause to wonder and stand rapt in awe, is as good as dead; his eyes are closed.

When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.

Pure mathematics is, in its way, the poetry of logical ideas.

Whoever undertakes to set himself up as a judge of Truth and Knowledge is shipwrecked by the laughter of the gods.