A picture may be worth a thousand words, a formula is worth a thousand pictures. - Edsger W. Dijkstra

Raise your quality standards as high as you can live with, avoid wasting your time on routine problems, and always try to work as closely as possible at the boundary of your abilities. Do this, because it is the only way of discovering how that boundary should be moved forward.

If debugging is the process of removing software bugs, then programming must be the process of putting them in.

Programming, when stripped of all its circumstantial irrelevancies, boils down to no more and no less than very effective thinking so as to avoid unmastered complexity, to very vigorous separation of your many different concerns.