Best quote(s) of LFMTP

I think it's a tie

1) Gilles: Higher order matching with dependent types is undecidable.
    Jason: Really?  Who proved that?
    Gilles: I did.

2) Derek: Have you looked at how I do it in MixML?  How do the methods compare?
    Florian: I haven't looked, but I'd be surprised if they are different.  If you do it right, it ends up like this.
   Derek: I was going to say, if you do it right, it ends up like MixML.