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Insanity: doing the same thing over and over again and expecting different results.

Intellectual growth should commence at birth and cease only at death.


It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing – a somewhat unfamilar conception for the average mind. Furthermore, the equation E = mc2, in which energy is put equal to mass, multiplied by the square of the velocity of light, showed that very small amounts of mass may be converted into a very large amount of energy an...

It gives me great pleasure indeed to see the stubbornness of an incorrigible nonconformist warmly acclaimed.

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


It is my conviction that killing under the cloak of war is nothing but an act of murder.

It is strange to be known so universally and yet to be so lonely.

It is the supreme art of the teacher to awaken joy in creative expression and knowledge.


It stands to the everlasting credit of science that by acting on the human mind it has overcome man's insecurity before himself and before nature.

It was the experience of mystery - even if mixed with fear - that engendered religion.

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

Joy in looking and comprehending is nature's most beautiful gift.

Knowledge of what is does not open the door directly to what should be.

Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.

Let every man be respected as an individual and no man idolized.

Let us not forget that human knowledge and skills alone cannot lead humanity to a happy and dignified life. Humanity has every reason to place the proclaimers of high moral standards and values above the discoverers of objective truth. What humanity owes to personalities like Buddha, Moses, and Jesus ranks for me higher than all the achievements of the enquiring and constructive mind. What these b...

Logic will get you from A to B. Imagination will take you everywhere.

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


Measured objectively, what a man can wrest from Truth by passionate striving is utterly infinitesimal. But the striving frees us from the bonds of the self and makes us comrades of those who are the best and the greatest.

Morality is of the highest importance - but for us, not for God.

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