"...like Cervantes, who lets Sancho Panza lose
the darling little donkey on which he rides, but a few chapters later the author has
forgotten about it and the dear animal is back again."
"If you finally ask me: Well, what are these corpuscles really, these atoms
and molecules? - I must confess honestly i know the answer just as little as I know where
Sancho Panza's second donkey came from."
Erwin Schrödinger, 1952
Audio-document from the lecture "Was ist Materie?"
English translation: taken from the article
"Our Conception of Matter"
(in What is Life? and Other Scientific