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

“Dunia ini adalah sebuah tempat yang berbahaya untuk didiami, bukan karena orang-orangnya jahat, tapi karena orang-orangnya tak perduli.”

“Belajarlah dari masa lalu, hiduplah untuk masa depan. Yang terpenting adalah tidak berhenti bertanya.”

“Never lose a holy curiosity.”

“I have never looked upon ease and happiness as ends in themselves -- this critical basis I call the ideal of a pigsty. The ideals that have lighted my way, and time after time have given me new courage to face life cheerfully, have been Kindness, Beauty, and Truth. Without the sense of kinship with men of like mind, without the occupation with the objective world, the eternally unattainable in the field of art and scientific endeavors, life would have seemed empty to me. The trite objects of human efforts -- possessions, outward success, luxury -- have always seemed to me contemptible.”

“There are two means of refuge from the misery of life - music and cats.”

“If you don’t have time to do it right, when will you have time to do it over?”

“It gives me great pleasure indeed to see the stubbornness of an incorrigible nonconformist warmly acclaimed.”

“A ship is always safe at the shore - but that is NOT what it is built for.”

“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?”

“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.”

“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.”

“Berusahalah untuk tidak menjadi manusia yang berhasil tapi berusahalah menjadi manusia yang berguna”

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

“I maintain that the cosmic religious feeling is the strongest and noblest motive for scientific research.”