KISS principle = the empirical principle “Keep it simple, stupid” … and similar concepts:

• Albert Einstein – Everything should be made as simple as possible, but no simpler
• Leonardo Da Vinci – Simplicity is the ultimate sophistication
• Antoine de Saint Exupéry – It seems that perfection is reached not when there is nothing left to add, but when there is nothing left to take away
• Colin Chapman – Simplify, and add lightness.