All following quotes were said by Albert Einstein:
"Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius, and a lot of courage, to move in the opposite direction."
"The hardest thing in the world to understand is the income tax."
"Weakness of attitude becomes weakness of character."
"I never think of the future. It comes soon enough."
"The eternal mystery of the world is its comprehensibility."
"Anyone who has never made a mistake has never tried anything new."
"Everything should be made as simple as possible, but not simpler."
"Common sense is the collection of prejudices acquired by age eighteen."
"The secret to creativity is knowing how to hide your sources."
"Peace cannot be kept by force. It can only be achieved by understanding."
"The most incomprehensible thing about the world is that it is comprehensible."
"We can't solve problems by using the same kind of thinking we used when we created them."
"Education is what remains after one has forgotten everything he learned in school."
"Do not worry about your difficulties in Mathematics. I can assure you mine are still greater."
"As far as the laws of mathematics refer to reality, they are not certain, as far as they are certain, they do not refer to reality."
"The fear of death is the most unjustified of all fears, for there's no risk of accident for someone who's dead."
"The release of atom power has changed everything except our way of thinking...the solution to this problem lies in the heart of mankind. If only I had known, I should have become a watchmaker."
"The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand rapt in awe, is as good as dead: his eyes are closed."
"Now he has departed from this strange world a little ahead of me. That means nothing. People like us, who believe in physics, know that the distinction between past, present, and future is only a stubbornly persistent illusion."
"Not everything that counts can be counted, and not everything that can be counted counts."
"It seems to me that the idea of a personal God is an anthropological concept which I cannot take seriously. I also cannot imagine some will or goal outside the human sphere.... Science has been charged with undermining morality, but the charge is unjust. A man's ethical behavior should be based effectually on sympathy, education, and social ties and needs; no religious basis is necessary. Man would indeed be in a poor way if he had to be restrained by fear of punishment and hope of reward after death."
"I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones."
I cannot conceive of a personal God who would directly influence the actions of individuals, or would directly sit in judgment on creatures of his own creation. I cannot do this in spite of the fact that mechanistic causality has, to a certain extent, been placed in doubt by modern science. [He was speaking of Quantum Mechanics and the breaking down of determinism.] My religiosity consists in a humble admiration of the infinitely superior spirit that reveals itself in the little that we, with our weak and transitory understanding, can comprehend of reality. Morality is of the highest importance -- but for us, not for God.