"There are two ways of constructing a software design: one way is to make it so simple that there are obviously no deficiencies and the other is to make it so complicated that there are no obvious deficiencies."
Professor C.A.R (Tony) Hoare, the inventor of Quicksort and CSP among many other things
"Make it as simple as possible, but not simpler"
"Entia non sunt multiplicanda praeter necessitatem"
William of Occam (the principle known as Occam's Razor)
"A designer knows that he has arrived at perfection not when there is no longer anything to add, but when there is no longer anything to take away."
Antoine de Saint-Exupéry
"Our life is frittered away by detail - Simplify, simplify".
Henry David Thoreau
"I have made this letter longer than usual, because I lack the time to make it short."