DAVID KAPLAN

There once was a young man called “dthat”

Whose name Frege made faces at.

But when Kaplan said “No,

Gottlob, say it ain’t so”,

His friends all agreed dthat was dthat. 

Note: David Kaplan was my dissertation advisor.  I owe him more than I can say.  For his support and friendship and great good humor, I am eternally grateful.  Kaplan is, of course, immortal, and will remain so for all time.  But now I have extended his immortality with this limerick.