“Intellect has powerful muscles, but no personality.”

“Science can only ascertain what is, but not what should be, and outside of its domain value, elly judgments of all kinds remain necessary.”

“Който обича да марширува, напразно има мозък в главата — гръбначният би бил достатъчен.”

“Logic will get you from A to Z; imagination will get you everywhere.”

“I'd rather be an optimist and a fool than a pessimist and right.”

“The only thing that interferes with my learning is my education.”

“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.”

“Whoever undertakes to set himself up as a judge of Truth and Knowledge is shpwrecked by the laughter of the gods.”

“The more I learn, the more I realize how much I don't know.”

“Do you really believe that the moon isn’t there when nobody looks?”

“Growth comes through analogy; through seeing how things connect, rather than only seeing how they might be different.”

“Phantasie ist wichtiger als Wissen, denn Wissen ist begrenzt.”

“I am not a genius, I am just curious. I ask many questions. and when the answer is simple, then God is answering.”

“I was originally supposed to become an engineer but the thought of having to expend my creative energy on things that make practical everyday life even more refined, with a loathsome capital gain as the goal, was unbearable to me.”

“The fairest thing we can experience is the mysterious. It is the fundamental emotion which stands at the cradle of true art and science. He who knows it not and can no longer wonder, no longer feel amazement, is as good as dead, a snuffed-out candle.”