Thanks for all the guesses!
The answer is JBS Haldane.
@tnavinash.bsky.social @marekkohn.bsky.social @shikharabhat.bsky.social nailed it right away.
JBS, in turn, said of Medawar “He smiles and smiles and is a villain.”
Arvid Ågren
THURSDAY TRIVIA
Who did Peter Medawar describe as “in some ways the cleverest and in some ways the silliest man I have ever known”?
Arvid Ågren
Remembered by PB Medawar (1986, p. 56).
Edwin Goodrich on makes a branch of zoology reach adult stature.
Petition to rename the SSE Lifetime Achievement Award the Top Banana Award.
JBS's comment is retold by JMS here, where they also talk about how handsome PBM was ("touched by the gods" as Tinbergen put it). www.webofstories.com/play/john.ma...