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

Opportunities that present themselves to you are the consequence -- at least partially -- of being in the right place at the right time. They tend to present themselves when you're not expecting it -- and often when you are engaged in other activities that would seem to preclude you from pursuing them. And they come and go quickly -- if you don't jump all over an opportunity, someone else generally will and it will vanish. -- Marc Andreessen (http://blog.pmarca.com/)

Adapting old programs to fit new machines usually means adapting new machines to behave like old ones. -- Alan J. Perlis (Epigrams in programming)

Lisp is worth learning for the profound enlightenment experience you will have when you finally get it; that experience will make you a better programmer for the rest of your days, even if you never actually use Lisp itself a lot. -- Eric S. Raymond

Argue with idiots, and you become an idiot. If you compete with slaves you become a slave. -- Paul Graham and Norbert Weiner, respectively

Hire people smarter than you. Work with people smarter than you. Listen to them. Let them lead you. Take the blame for all failures, give away the credit for all successes. -- How to fail: 25 secrets learned through failure

Definiteness of purpose is the starting point of all achievement. –W. Clement Stone

If you want to achieve excellence, you can get there today. As of this second, quit doing less-than-excellent work. ~Thomas J. Watson

Fortune sides with him who dares. ~Virgil

Whenever you see a successful person you only see the public glories, never the private sacrifices to reach them. ~Vaibhav Shah