“The old disease, thought Rubashov. Revolutionaries should not think through other people's minds. Or, perhaps they should? Or even ought to? How can one change the world if one identifies oneself w...”

“Solitary confinement is rock bottom, its absolute unfreedom.”

“It was quiet in the cell. Rubashov heard only the creaking of his steps on the tiles. Six and a half steps to the door, whence they must come to fetch him, six and a half steps to the window, behin...”

“Ivanov- "Up to now , all revolutions have been made by moralizing diletantes. They were always in good faith and perished because of their dilettantism. We for the first time are consequent...""Yes...”

“Each wrong idea we follow is a crime committed against future generations.”

“The principal mark of genius is not perfection but originality, the opening of new frontiers.”

“And despite the insignificance of the instant we have so far occupied in cosmic time, it is clear that what happens on and near Earth at the beginning of the second cosmic year will depend very muc...”

“In addition, human beings have, in the most recent few tenths of a percent of our existence, invented not only extra-genetic but also extrasomatic knowledge: information stored outside our bodies, ...”

“Evolution is adventitious and not foresighted. Only through the deaths of an immense number of slightly maladapted organisms are we, brains and all, here today.”

“Work will drive you crazy if you let it.”

“Love, n. A temporary insanity curable by marriage.”

“Love is merely a madness; and, I tell you, deserves as well a dark house and a whip as madmen do; and the reason why they are not so punish'd and cured is that the lunacy is soordinary that the whi...”