Pay attention to opportunity cost at all times. Doing one thing means not doing other things. This is a form of risk that is very easy to ignore, to your detriment. -- Marc Andreessen (http://blog.pmarca.com/)

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

Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great. -- Mark Twain

The job of a leader today is not to create followers. It’s to create more leaders. -- Ralph Nader

Since programmers create programs out of nothing, imagination is our only limitation. Thus, in the world of programming, the hero is the one who has great vision. Paul Graham is one of our contemporary heroes. He has the ability to embrace the vision, and to express it plainly. His works are my favorites, especially the ones describing language design. He explains secrets of programming, languages, and human nature that can only be learned from the hacker experience. This book shows you his great vision, and tells you the truth about the nature of hacking. -- Yukihiro "Matz" Matsumoto, creator of Ruby

An interpreter raises the machine to the level of the user program; a compiler lowers the user program to the level of the machine language. -- SICP

The road to success and the road to failure are almost exactly the same. ~Colin R. Davis

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

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

You can do anything, but not everything. ~Anonymous