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.

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.

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

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.

You cannot simultaneously prevent and prepare for war.

Wisdom is not a product of schooling but of the lifelong attempt to acquire it.

It is harder to crack a prejudice than an atom.

Peace cannot be kept by force. It can only be achieved by understanding.

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.

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

Nothing will benefit human health and increase chances for survival of life on Earth as much as the evolution to a vegetarian diet.

The whole of science is nothing more than a refinement of everyday thinking.

The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.

To punish me for my contempt of authority, Fate has made me an authority myself. Aphorism for a friend (18 September 1930).