A clever person solves a problem. A wise person avoids it.

Put your hand on a hot stove for a minute, and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute. That's relativity.

Coincidence is God's way of remaining anonymous.

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

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

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.

I do not know with what weapons World War III will be fought, but World War IV will be fought with sticks and stones. Letter to Harry S. Truman.

The secret to creativity is knowing how to hide your sources.

Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution.

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

Science without religion is lame, religion without science is blind.

Computers are incredibly fast, accurate and stupid. Human beings are incredibly slow, inaccurate and brilliant. Together they are powerful beyond imagination.

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

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

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

The search for truth is more precious than its possession.

It is harder to crack a prejudice than an atom.

I want to know how God created this world. I am not interested in this or that phenomenon, in the spectrum of this or that element. I want to know His thoughts; the rest are details.

It has become appallingly obvious that our technology has exceeded our humanity.

This topic brings me to that worst outcrop of the herd nature, the military system, which I abhor. That a man can take pleasure in marching in formation to the strains of a band is enough to make me despise him. He has only been given his big brain by mistake; a backbone was all he needed. This plague-spot of civilisation ought to be abolished with all possible speed. Heroism by order, senseless violence, and all the pestilent nonsense that goes by the name of patriotism — how I hate them! War seems to me a mean, contemptible thing: I would rather be hacked in pieces than take part in such an abominable business.

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

Not everything that counts can be counted, and not everything that can be counted counts. This was on a sign hanging in Einstein's office at Princeton, which is often quoted as a statement by him; research should be able to reveal whether or not it originated with Einstein.

Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world. In our endeavor to understand reality we are somewhat like a man trying to understand the mechanism of a closed watch. He sees the face and the moving hands, even hears its ticking, but he has no way of opening the case. If he is ingenious he may form some picture of a mechanism which could be responsible for all the things he observes, but he may never be quite sure his picture is the only one which could explain his observations. He will never be able to compare his picture with the real mechanism and he cannot even imagine the possibility or the meaning of such a comparison.

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

Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.