Have you ever noticed that when you sit down to write something, half the ideas that end up in it are ones you thought of while writing it? The same thing happens with software. Working to implement one idea gives you more ideas. -- Paul Graham, The other road ahead.

Software is like sex: It’s better when it’s free. -- Linus Torvalds

If it looks like a duck, walks like a duck, and quacks like a duck, it's a duck. -- Official definition of "duck typing"

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/)

This challenge, viz. the confrontation with the programming task, is so unique that this novel experience can teach us a lot about ourselves. It should deepen our understanding of the processes of design and creation, it should give us better control over the task of organizing our thoughts. If it did not do so, to my taste we should no deserve the computer at all! It has allready taught us a few lessons, and the one I have chosen to stress in this talk is the following. We shall do a much better programming job, provided that we approach the task with a full appreciation of its tremenduous difficulty, provided that we stick to modest and elegant programming languages, provided that we respect the intrinsec limitations of the human mind and approach the task as Very Humble Programmers. -- E. W. Dijkstra, The humble programmer

When all you have is a hammer, everything looks like a nail. -- unknown

Whatever the mind of man can conceive and believe, it can achieve. –Napoleon Hill

It’s not the years in your life that count. It’s the life in your years. –Abraham Lincoln

Teach thy tongue to say, I do not know, and thous shalt progress. –Maimonides

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