Whenever anything is being accomplished, it is being done, I have learned, by a monomaniac with a mission. - Peter Drucker

The arts alone give direct access to experience. To eliminate them from education - or worse, to tolerate them as cultural ornaments - is antieducational obscurantism. It is foisted on us by the pedants and snobs of Hellenistic Greece who considered artistic performance fit only for slaves...

The one man to distrust, however, is the man who never makes a mistake, never commits a blunder, never fails in what he tries to do. He is either a phony, or he stays with the safe, the tried, and the trivial.

This defines entrepreneur and entrepreneurship - the entrepreneur always searches for change, responds to it, and exploits it as an opportunity.