Lisp. Lisp is the only language

Why there are other programming languages besides Lisp? With Lisp's macro system you can create any language you need ever. Small, big, finely tuned for your task. Supporting other languages means opposing progress and delaying the inevitable future. There should be only one language and myriad languages at the same time. The one language is Lisp.

Lisp isn’t really a programming language. It’s a consistent system for defining programming languages in general. That is why learning it is difficult– you’re going up into a level abstraction that you never imagined could exist.

Lisp isn't really a language at all. It's more of a mathematical entity. You might say it wasn't invented but discovered. In fact if there is intelligent life in the universe and they have computers I'll bet they have something equivalent to Lisp too.