If something isn’t working, you need to look back and figure out what got you excited in the first place. -- David Gorman (ImThere.com)

If you tell the truth, you don't have to remember anything. -- Mark Twain

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

Hence my urgent advice to all of you to reject the morals of the bestseller society and to find, to start with, your reward in your own fun. This is quite feasible, for the challenge of simplification is so fascinating that, if we do our job properly, we shall have the greatest fun in the world. -- E. W. Dijkstra, On the nature of computing science.

Write it properly first. It's easier to make a correct program fast, than to make a fast program correct. -- http://www.cpax.org.uk/prg/

If it keeps up, man will atrophy all his limbs but the push-button finger. -- Frank Lloyd Wright

The person who says it cannot be done should not interrupt the person who is doing it. –Chinese Proverb

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

If the wind will not serve, take to the oars. –Latin Proverb

Our lives begin to end the day we become silent about things that matter. –Martin Luther King Jr.