"High Joe! You, and your damned molecular models! Today I got a whole box of them to build such a simple thing as DNA molecule (i.e. two Ribose-Phosphate chains with few Adenines, Thymines, Guanines, and Cytosines between them), and to see if the 20 amino acids would fit into the loops like a key into a lock. And I cannot even build a sugar! How do you make [drawing of a molecule here] for example? Yours, (s) Geo. P.S. Rho is fascinated by that game and asks you to send her as a present ten (10) boxes of atoms."
George Gamow. Letter from George Gamow to Joe Hirschfelder. October 22, 1953.

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