Kenneth Arrow says

1. The family of development economist Hollis Chenery owned the race horse Secretariat (!, related sources).

2. The opposition to putting the Reagan Library at Hoover and Stanford came from NIMBY considerations, not ideology.

3. The historian of Germany Gordon Craig was the greatest lecturer Arrow ever heard [TC: I can’t find any of him on YouTube.]

4. Arrow: “Well, I do remember an awful lot, and it’s not photographic memory.  I don’t remember the page exactly.  I read things in some order, and they come back, but I can’t explain how or why it happens.

…I think it’s just a desire to understand.  I just enjoy learning things.  Learning.  I don’t mean…I like to systematize, not just memorize.  To put them together.  I have this characteristic, even when I was young.  I treat everything like it was geography; in my mind I’d try to put the things on a map.  When I was reading history I’d try to make up genealogical tables, of the kings of England or something.  So I had this tendency to try to systematize things, to try and understand remote sounding things.”

5. His advice for Larry Summers [his nephew]: “Err on the side of too much regulation.”

6. Arrow once spent six months on the Council of Economic Advisors.  His two major effects may have been to veto an American version of the SST and to help veto the digging of a second Panama Canal.

Those are all from the frank interviews with Arrow in On Ethics and Economics: Conversations with Kenneth J. Arrow, by Arrow of course and also by Kristen Renwick Monroe and Nicholas Monroe Lampros.  Interesting throughout.