“Intelligence is an accident of evolution, and not necessarily an advantage.”

“One might suppose that reality must be held to at all costs. However, though that may be the moral thing to do, it is not necessarily the most useful thing to do. The Greeks themselves chose the ideal over the real in their geometry and demonstrated very well that far more could be achieved by consideration of abstract line and form than by a study of the real lines and forms of the world; the greater understanding achieved through abstraction could be applied most usefully to the very reality that was ignored in the process of gaining knowledge.”

“I stand four-square for reason, and object to what seems to me to be irrationality, whatever the source. If you are on my side in this, I must warn you that the army of the night has the advantage of overwhelming numbers, and, by its very nature, is immune to reason, so that it is entirely unlikely that you and I can win out. We will always remain a tiny and probably hopeless minority, but let us never tire of presenting our view, and of fighting the good fight for the right.”

“To a thoughtful biographer, [Ebling Mis's house] was "the symbolization of a retreat from a non-academic reality", a society columnist gushed silkily at its "frightfully masculine atmosphere of careless disorder", a University Ph.D called it brusquely, "bookish, but unorganized", a non-university friend said, "good for a drink anytime and you can put your feet on the sofa", and a breezy newsweekly broadcast, that went in for color, spoke of the "rooky, down-to-earth, no-nonsense living quarters of blaspheming, Leftish, balding Ebling Mis". To Bayta, who thought of no audience but herself at the moment, and who had the advantage of first-hand information, it was merely sloppy.”

“Fighting and scars are part of a trader's overhead. But fighting is only useful when there's money at the end, and if I can get it without, so much the sweeter.”

“How often people speak of art and science as though they were two entirely different things, with no interconnection. An artist is emotional, they think, and uses only his intuition; he sees all at once and has no need of reason. A scientist is cold, they think, and uses only his reason; he argues carefully step by step, and needs no imagination. That is all wrong. The true artist is quite rational as well as imaginative and knows what he is doing; if he does not, his art suffers. The true scientist is quite imaginative as well as rational, and sometimes leaps to solutions where reason can follow only slowly; if he does not, his science suffers.”

“Lamentarsi è una caratteristica innata della specie umana. Nel Secolo del Carbone la gente imprecava contro la macchina a vapore; in una commedia di Shakespeare un personaggio lamenta l'invenzione della polvere da sparo. Mille anni dopo ci si lamentava per la fabbricazione del cervello positronico.”