No problem should ever have to be solved twice. -- Eric S. Raymond, How to become a hacker

The ability to simplify means to eliminate the unnecessary so that the necessary may speak. -- Hans Hofmann

A guideline in the process of stepwise refinement should be the principle to decompose decisions as much as possible, to untangle aspects which are only seemingly interdependent, and to defer those decisions which concern details of representation as long as possible. -- Niklaus Wirth

Lisp has jokingly been called "the most intelligent way to misuse a computer". I think that description is a great compliment because it transmits the full flavor of liberation: it has assisted a number of our most gifted fellow humans in thinking previously impossible thoughts. -- Edsger Dijkstra, CACM, 15:10

If everything seems under control, you're not going fast enough. -- Mario Andretti

We remember what we learn when we care about performing better and when we believe that what we have been asked to do is representative of reality. -- Roger Schank, Engines for Education

People who succeed have momentum. The more they succeed, the more they want to succeed, and the more they find a way to succeed. Similarly, when someone is failing, the tendency is to get on a downward spiral that can even become a self-fulfilling prophecy. ~Tony Robbins

Believe you can and you’re halfway there. –Theodore Roosevelt

Remember no one can make you feel inferior without your consent. –Eleanor Roosevelt

Every child is an artist. The problem is how to remain an artist once he grows up. –Pablo Picasso