Haskell

"SQL, Lisp, and Haskell are the only programming languages that I've seen where one spends more time thinking than typing."

"A parser for things Is a function from strings To lists of pairs Of things and strings"

"Haskell is one of the leading languages for teaching functional programming, enabling students to write simpler and cleaner code, and to learn how to structure and reason about programs."

"Haskell is faster than C++, more concise than Perl, more regular than Python, more flexible than Ruby, more typeful than C#, more robust than Java, and has absolutely nothing in common with PHP."

"Haskell is one of those languages that mathematician-type/minded people love! It's sort of a language for geniuses, by geniuses. So, you should probably know about it if only to be able to say "well, is this kind of like Haskell", and if so, you know you have to hire some very smart people to program in it. Haskell is sort of a modern-day Lisp, in that respect."

"Haskell, at its core, is simple: it is just a polymorphic lambda calculus with lazy evaluation plus algebraic data types and type classes."