“We are on strike, we, the men of the mind.We are on strike against self-immolation. We are on strike against the creed of unearned rewards and unrewarded duties. We are on strike against the dogma ...”

“People, he thought, were as hungry for a sight of joy as he had always been--for a moment's relief from that gray load of suffering which seemed so inexplicable and unnecessary. He had never been a...”

“Happiness is not to be achieved at the command of emotional whims. Happiness is not the satisfaction of whatever irrational wishes you might blindly attempt to indulge. Happiness is a state of non-...”

“Productiveness is your acceptance of morality, your recognition of the fact that you choose to live--that productive work is the process by which man's consciousness controls his existence, a const...”

“Do not let your fire go out, spark by irreplaceable spark in the hopeless swamps of the not-quite, the not-yet, and the not-at-all. Do not let the hero in your soul perish in lonely frustration for...”

“Live and act within the limit of your knowledge and keep expanding it to the limit of your life.”

“The relationship between truth and reason:"Truth cannot be reached by reason alone!”

“I writeNotFor the sake of gloryNot For the sake of fameNotFor the sake of successBut for the sake of my soul”

“The invisible and the non-existent look very much alike.”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”

“The truth." Dumbledore sighed. "It is a beautiful and terrible thing, and should therefore be treated with great caution.”

“The truth is rarely pure and never simple.”

“Never tell the truth to people who are not worthy of it.”