Lisp programmers know the value of everything but the cost of nothing. -- Alan J. Perlis

A tail call allows a function to return the result of another function without leaving an entry on the stack. Tail recursion is a specific case of tail calling. -- ASPN : Python Cookbook : Explicit Tail Call

Genius is 1% inspiration and 99% perspiration. -- Thomas Edison

You think you know when you learn, are more sure when you can write, even more when you can teach, but certain when you can program. -- Alan J. Perlis (Epigrams in programming)

An expert is, according to my working definition "someone who doesn't need to look up answers to easy questions". -- Eric Lippert.

All problems in computer science can be solved by another level of indirection. -- Butler Lampson

It’s not what you look at that matters, it’s what you see. ~Anonymous

You can’t fall if you don’t climb. But there’s no joy in living your whole life on the ground. –Unknown

Whatever the mind of man can conceive and believe, it can achieve. –Napoleon Hill

When I dare to be powerful - to use my strength in the service of my vision, then it becomes less and less important whether I am afraid. ~Audre Lorde