Always dive down into a problem and get your hands on the deepest issue behind the problem. All other considerations are to dismissed as "engineering details"; they can be sorted out after the basic problem has been solved. -- Chris Crawford

The greatest challenge to any thinker is stating the problem in a way that will allow a solution. -- Bertrand Russell

Simplicity takes effort-- genius, even. -- Paul Graham

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

Measure everything you can about the product, and you'll start seeing patterns. -- Max Levchin, PayPal founder, Talk at StartupSchool2007

Seize any opportunity, or anything that looks like opportunity. They are rare, much rarer than you think... -- Nassim Nicholas Taleb, "The Black Swan".

I have learned over the years that when one's mind is made up, this diminishes fear. –Rosa Parks

I find that the harder I work, the more luck I seem to have. ~Thomas Jefferson

Opportunities don’t happen, you create them. ~Chris Grosser

Strive not to be a success, but rather to be of value. –Albert Einstein