I believe that a simple and unassuming manner of life is best for everyone, best both for the body and the mind.

Concern for man and his fate must always form the chief interest of all technical endeavors. Never forget this in the midst of your diagrams and equations.

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

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

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

An empty stomach is not a good political adviser.

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.

Anger dwells only in the bosom of fools.

Make everything as simple as possible, but not simpler.

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

When I examine myself and my methods of thought, I come to the conclusion that the gift of fantasy has meant more to me than any talent for abstract, positive thinking.

Our task must be to free ourselves by widening our circle of compassion to embrace all living creatures and the whole of nature and its beauty.

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

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

The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.

The true sign of intelligence is not knowledge but imagination.

Everything that can be counted does not necessarily count; everything that counts cannot necessarily be counted.

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.