No two electrons in the same state? That is why atoms are so unnecessarily big, and why metal and stone are so bulky.
Paul EhrenfestDon't be impatient with me. Bear in mind that I hop around among all of you big beasts like a harmless and helpless frog who is afraid of being squashed.
Paul EhrenfestEinstein, my upset stomach hates your theory [of General Relativity]โit almost hates you yourself! How am I to' provide for my students? What am I to answer to the philosophers?!!
Paul Ehrenfest