Before software can be reusable it first has to be usable.
--Ralph Johnson

Perfection is achieved not when there is nothing more to add, but rather when there is nothing more to take away.
--Antoine de Saint-Exupery

Simplicity is prerequisite for reliability.
--Edsger W. Dijkstra

Any fool can write code that a computer can understand. Good programmers write code that humans can understand.
--Martin Fowler

When debugging, novices insert corrective code; experts remove defective code.
--Richard Pattis