“The illiterate of the 21st century will not be those who cannot read and write, but those who cannot learn, unlearn and relearn.” Alvin Toffler

And via Michelle Martin…

“Nobody learns except by making mistakes,” Drucker wrote in his 1954 landmark book, The Practice of Management. “The better a man is, the more mistakes he will make—for the more new things he will try. I would never promote a man into a top-level job who has not made mistakes, and big ones at that. Otherwise, he is sure to be mediocre. Worse still, not having made mistakes he will not have learned how to spot them early and how to correct them.”