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

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

Premature optimization is the root of all evil (or at least most of it) in programming. -- Donald Knuth

I have never met a man so ignorant that I couldn't learn something from him. -- Galileo Galilei

Everything should be made as simple as possible, but no simpler. -- Albert Einstein

If we wish to count lines of code, we should not regard them as *lines produced* but as *lines spent*. -- Edsger Dijkstra

Certain things catch your eye, but pursue only those that capture the heart. – Ancient Indian Proverb

Whether you think you can or you think you can’t, you’re right. –Henry Ford

You may be disappointed if you fail, but you are doomed if you don't try. –Beverly Sills

Successful people do what unsuccessful people are not willing to doDon’t wish it were easier, wish you were better. ~Jim Rohn