I went through a Lisp phase exactly like that. Currently I'm going through an extremely similar Haskell phase. I've learnt half a dozen languages before these t

I went through a Lisp phase exactly like that. Currently I'm going through an extremely similar Haskell phase. I've learnt half a dozen languages before these two, but I've never experienced the satisfaction and obsession I've experienced with these two. My Lisp phase went on for the better part of a year, and I've been learning all the Haskell I can for 11 months now, but my obsession is still in full force. Haskell also turned me towards maths, and now I'm reading a book about category theory and a book about type theory.