“Look deep, deep into nature, and then you will understand everything better. -”

“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.”

“Nothing happens until something moves.”

“There is nothing known as "Perfect". Its only those imperfections which we choose not to see!!”

“The only thing that you absolutely have to know, is the location of the library.”

“Is it not better for a man to die for a cause in which he believes, such as peace, than to suffer for a cause in which he does not believe, such as war?”

“Try not to become a man of success. Rather become a man of value.”

“The strongest force in the universe is Compound Interest.”

“I cannot conceive of a great scientist without this profound faith: Science without religion is lame, religion without science is blind.”

“A man's ethical behaviour should be based effectually on sympathy, education, and social ties and needs; no religious basis is necessary. Man would indeed be in a poor way if he had to be restrained by fear of punishment and hope of reward after death.”

“Come si può mettere la Nona di Beethoven in un diagramma cartesiano? Ci sono delle realtà che non sono quantificabili. L'universo non è i miei numeri: è pervaso tutto dal mistero. Chi non ha il senso del mistero è un uomo mezzo morto.”

“This change in the conception of reality is the most profound and the most fruitful that physics has experienced since the time of Newton.

“Any fool can know. The point is to understand.”

“The only justifiable purpose of political institutions is to ensure the unhindered development of the individual.”

“You make experiments and I make theories. Do you know the difference? A theory is something nobody believes, except the person who made it. An experiment is something everybody believes, except the person who made it.