Paul Erdős

We had dinner this evening with friends K&K (at their house, for a lovely change).  It was a very pleasant late afternoon and evening, ending a lovely day.  But one thing stood out for me: I was not aware that I had spared any of my friends stories about one of my favourite mathematicians: the late Paul Erdős.  But apparently I had never mentioned him to K!  And I thought, that just in case some of you had never heard of him, I'd offer up a link to his Wikipedia page.
He was an amazing person, and I'm proud to say that even if he didn't always remember my name, he could usually be relied upon to recall what sorts of mathematics I did:-)

Yours, in tribute,
N.