“Teaching should be such that what is offered is perceived as a valuable gift and not as hard duty. Never regard study as duty but as the enviable opportunity to learn to know the liberating influence of beauty in the realm of the spirit for your own personal joy and to the profit of the community to which your later work belongs.” 

“A man's actions are determined by necessity, external and internal.”

“Sometimes one pays most for the things one gets for nothing.”

“No man or Genie on earth had "created" anything, we merely assembled God's Atoms, by learning it's properties, with his aid, so if anyone said that we had "invented" anything - he had Invented a lie; an unwise man.... thinks we have created an atom.”

“We must be prepared to make the same heroic sacrifices for the cause of peace that we make ungrudgingly for the cause of war.”

“Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.”

“Gravitation cannot be held responsible for people falling in love. How on earth can you explain in terms of chemistry and physics so important a biological phenomenon as first love? Put your hand on a stove for a minute and it seems like an hour. Sit with that special girl for an hour and it seems like a minute. That's relativity.”

“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.”

“Never lose a holy curiosity.”

“everyday is an oportunity to make a new happy ending.........”

“Coincidence is God's way of staying anonymous.”

“Great spirits have always encountered violent opposition from mediocre minds.”

“The hardest thing in the world to understand is the income tax.”

“Our separation from each other is an optical illusion.”

“La vie c’est comme la bicyclette : quand on arrête de pédaler on tombe.”