"A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects." -Robert A. Heinlein
Nicely put by mr. Heinlein. The renaissance guys called this kind of human being "homo universalis".
Speaking for myself, i'll probably never equal Leonardo Da Vinci, but i'll never give up trying either. And i'm sure i'll keep enjoying it...