On Learning Haskell, by Eric S. Raymond 

I’ve just found a nice piece of text, written by Eric S. Raymond, in which he talks about his experiences with Haskell. In case you didn’t know, he’s the one who said the following about Lisp:

LISP is worth learning for [..] the profound enlightenment experience you will have when you finally get it. That experience will make you a better programmer for the rest of your days, even if you never actually use LISP itself a lot.

Apparently, he ends up with the same conclusion in his article, On Learning Haskell.