Put your hand on a hot stove and it seems like an hour. Sit with a pretty girl for an hour and it seems like a minute. That's relativity.
Peace cannot be kept by force. It can only be achieved by understanding.
The secret to creativity is knowing how to hide your sources.
As our circle of knowledge expands, so does the circumference of darkness surrounding it.
Wisdom is not a product of schooling but of the lifelong attempt to acquire it.
Technological progress is like an axe in the hands of a pathological criminal.
Reality is merely an illusion, albeit a very persistent one.
Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.
No one can read the Gospels without feeling the actual presence of Jesus. His personality pulsates in every word. No myth is filled with such life.
It is harder to crack a prejudice than an atom.
Try to become not a man of success, but try rather to become a man of value.
The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.
Everything should be made as simple as possible, but no simpler.
The physicists say that I am a mathematician, and the mathematicians say that I am a physicist. I am a completely isolated man and though everybody knows me, there are very few people who really know me.
A clever person solves a problem. A wise person avoids it.
Computers are incredibly fast, accurate and stupid. Human beings are incredibly slow, inaccurate and brilliant. Together they are powerful beyond imagination.
The search for truth is more precious than its possession.
I want to know God's thoughts; the rest are details.
Common sense is nothing more than a deposit of prejudices laid down by the mind before you reach eighteen.
Life is like riding a bicycle. To keep your balance you must keep moving.
Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.
As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.
Any fool can know. The point is to understand.
The difference between genius and stupidity is that genius has its limits.
