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

Work as intensely as you play and play as intensely as you work. -- Eric S. Raymond, How To Be A Hacker

Things which matter most must never be at the mercy of things which matter least. -- Johann Wolfgang Von Goethe (1749-1832)

As builders and creators finding the perfect solution should not be our main goal. We should find the perfect problem. -- Isaac (blog comment)

A designer knows he has arrived at perfection not when there is no longuer anything to add, but when there is no longuer anything to take away. -- Antoine de St Exupery.

The proof is by reductio ad absurdum, and reductio ad absurdum, which Euclid loved so much, is one of a mathematician’s finest weapons. It is a far finer gambit than any chess gambit: a chess player may offer the sacrifice of a pawn or even a piece, but a mathematician offers the game. -- G. H. Hardy

Education costs money. But then so does ignorance. –Sir Claus Moser

Change your thoughts and you change your world. –Norman Vincent Peale

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

Nothing in the world is more common than unsuccessful people with talent. ~Anonymous