Any sufficiently advanced technology is undistinguishable from magic. -- Arthur C. Clarke

Men never do evil so completely and cheerfully as when they do it from religious conviction. -- Blaise Pascal (attributed)

Omit needless words. -- William Strunk, Jr. (The Elements of Style)

Experience is what you get when you don't get what you want. -- Cited by Randy Pausch

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

We fail to realize that mastery is not about perfection. It's about a process, a journey. The master is the one who stays on the path day after day, year after year. The master is the one who is willing to try, and fail, and try again, for as long as he or she lives. -- George Leonard, Mastery.

Be miserable. Or motivate yourself. Whatever has to be done, it’s always your choice. ~Wayne Dyer

To be successful you must accept all challenges that come your way. You can’t just accept the ones you like. ~Mike Gafka

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

Success is walking from failure to failure with no loss of enthusiasm. ~Winston Churchill