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

It is, in fact, nothing short of a miracle that the modern methods of instruction have not yet entirely strangled the holy curiosity of inquiry

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

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

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

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

The world is in greater peril from those who tolerate or encourage evil than from those who actually commit it

I love to travel, but I hate to arrive.

All that is valuable in human society depends upon the opportunity for development accorded the individual.

Although I am a typical loner in daily life, my consciousness of belonging to the invisible community of those who strive for truth, beauty, and justice has preserved me from feeling isolated.

The years of anxious searching in the dark, with their intense longing, their alternations of confidence and exhaustion, and final emergence into light—only those who have experienced it can understand that.

Let us not forget that human knowledge and skills alone cannot lead humanity to a happy and dignified life

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

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

Invention is not the product of logical thought, even though the final product is tied to a logical structure.

Hail to the man who went through life always helping others, knowing no fear, and to whom aggressiveness and resentment are alien

Science can flourish only in an atmosphere of free speech.

I speak to everyone in the same way, whether he is the garbage man or the president of the university.

A happy man is too satisfied with the present to dwell too much on the future.