“It is every man's obligation to put back into the world at least the equivalent of what he takes out of it.”

“Success = 1 part work + 1 part play + 1 part keep your mouth shut”

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

“Ognuno è un genio. Ma se si giudica un pesce dalla sua abilità di arrampicarsi sugli alberi lui passerà tutta la sua vita a credersi stupido.”

“The bigotry of the nonbeliever is for me nearly as funny as the bigotry of the believer.”

“Kebanyakan orang mengatakan bahwa kecerdasanlah yang melahirkan seorang ilmuwan besar. Mereka salah, karakterlah yang melahirkannya.”

“The tendencies we have mentioned are something new for America. They arose when, under the influence of the two World Wars and the consequent concentration of all forces on a military goal, a predominantly military mentality developed, which with the almost sudden victory became even more accentuated. The characteristic feature of this mentality is that people place the importance of what Bertrand Russell so tellingly terms “naked power” far above all other factors which affect the relations between peoples. The Germans, misled by Bismarck’s successes in particular, underwent just such a transformation of their mentality—in consequence of which they were entirely ruined in less than a hundred years. I must frankly confess that the foreign policy of the United States since the termination of hostilities has reminded me, sometimes irresistibly, of the attitude of Germany under Kaiser Wilhelm II, and I know that, independent of me, this analogy has most painfully occurred to others as well. It is characteristic of the military mentality that non-human factors (atom bombs, strategic bases, weapons of all sorts, the possession of raw materials, etc.) are held essential, while the human being, his desires and thoughts—in short, the psychological factors—are considered as unimportant and secondary. Herein lies a certain resemblance to Marxism, at least insofar as its theoretical side alone is kept in view. The individual is degraded to a mere instrument; he becomes “human materiel.” The normal ends of human aspiration vanish with such a viewpoint. Instead, the military mentality raises “naked power” as a goal in itself—one of the strangest illusions to which men can succumb.”

“The value of an education in a liberal arts college is not the learning of many facts, but the training of the mind to think something that cannot be learned from textbooks.”

“Značajni problemi s kojima se suočavamo ne mogu biti riješeni na nivou razmišljanja koje je probleme kreiralo.”

“The greatest scientists are artists as well.”

“The important thing is not to stop questioning. Curiosity has its own reason for existence. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery each day. —"Old Man's Advice to Youth: 'Never Lose a Holy Curiosity.'"

“You do not really understand something unless you can explain it to your grandmother.”

“Put your hand on a hot stove for a minute, and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute. That's relativity.”

“A problem can't be solved with the same level of thinking that created it.”

“What really interests me is whether God had any choice in the creation of the world.”