Leonardo da Vinci's Principles for the Development of a Complete Mind: 1) Study the science of art. 2) Study the art of science. 3) Develop your senses: especially learn how to see. 4) Realize that everything connects to everything else.
Phi - The Golden Ratio presents itself everywhere in life, from basic geometry & crystal formations, to plants, planetary ratios and galactic formations. It is the most efficient ratio under near-perfect systems.