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

Talkers are no good doers. -- William Shakespeare, "Henry VI"

We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. -- Donald Knuth

Chance favors the prepared mind. -- Louis Pasteur

Any fool can make the simple complex, only a smart person can make the complex simple. -- unknown

Workers of the world, the chains that bind you are not held in place by a ruling class, a "superior" race, by society, the state, or a leader. They are held in place by none other than yourself. Those who seek to exploit are not themselves free, for they place no value in freedom. Who is it that really employs you and commands you to pick up your daily load? And who is it that you allow to pass judgment on the adequacy of your toil? Who have you empowered to dangle the carrot before you and threaten with disapproval? Who, when you wake each morning, sends you off to what you call your work? Is there an "I want to" behind all your "I have to," or have you been so long forgotten to yourself that "I want" exists only as an idea in your head? If you have disconnected from your soul's desire and are drowning in an ocean of "have to," then rise up and overthrow your master. Begin the journey toward emancipation. Work only in such a way that you are truly self-employed. -- Tim Gallwey, The inner game of work

The starting point of all achievement is desire. ~Napolean Hill

Success does not consist in never making mistakes but in never making the same one a second time. ~George Bernard Shaw

Do one thing every day that scares you. ~Anonymous

There is only one way to avoid criticism: do nothing, say nothing, and be nothing. –Aristotle