“If you [Robert Oppenheimer] intend to mount heavy mathematical artillery again during your coming year in Europe, I would ask you not only not to come to Leiden, but if possible not even to Holland, and just because I am… — Paul Ehrenfest Copy Share Image
Einstein, my upset stomach hates your theory [of General Relativity]—it almost hates you yourself! How am I to' provide for my students? What am… — Paul Ehrenfest Copy Share Image
“If you [Robert Oppenheimer] intend to mount heavy mathematical artillery again during your coming year in Europe, I would ask you not only not… — Paul Ehrenfest Copy Share Image
Don't be impatient with me. Bear in mind that I hop around among all of you big beasts like a harmless and helpless frog… — Paul Ehrenfest Copy Share Image
No two electrons in the same state? That is why atoms are so unnecessarily big, and why metal and stone are so bulky. — Paul Ehrenfest Copy Share Image
A thesis has to be presentable... but don't attach too much importance to it. If you do succeed in the sciences, you will do… — Paul Ehrenfest Copy Share Image
![“If you [Robert Oppenheimer] intend to mount heavy mathematical artillery again during your coming year in Europe, I would ask you not only not to come to Leiden, but if possible not even to Holland, and just because I am really so fond of you and want to keep it that way. But if, on the contrary…” quote by Paul Ehrenfest](https://sms4smile.com/quotes/img-quotes/986/paul-ehrenfest-52330_open-arms_if-you-robert-oppenheimer-intend-to-moun_1215665.jpg)
![“Einstein, my upset stomach hates your theory [of General Relativity]—it almost hates you yourself! How am I to' provide for my students? What am I to answer to the philosophers?!!” quote by Paul Ehrenfest](https://sms4smile.com/quotes/img-quotes/8bf/paul-ehrenfest-52330_answers_einstein-my-upset-stomach-hates-your-the_467759.jpg)
