The KISS principle: Simplicity should be a key goal in design, unnecessary complexity should be avoided.

"Everything should be as simple as it is, but not simpler" ~ Albert Einstein

"Simplicity is the ultimate sophistication" ~ Leonardo Da Vinci

“Life is really simple, but we insist on making it complicated.”~ Confusious

“All the great things are simple” ~ Winston Churchill

“Sometimes the questions are complicated and the answers are simple.” ~ Dr Seuss