“A leaf has the form it has because it belongs to a certain tree and fulfils a certain function; its structure is determined by the veins which carry the sap, and the skeleton that supports it might have been worked out by mathematics…if we saw a fig-leaf on a weeping-willow we would have the feeling that all was not well. It would lack coherence. A leaf is beautiful not because it is stylish but because it is natural, created in its exact form by its exact function.” -Bruno Munari, Design as Art