We learn much more from our failures than our successes ... our successes don't show us things that we didn't already know.

The children point is important. Over the last few decades, parents and teachers have worried far too much about protecting a child's 'self esteem'. We have a generation of people coming of age who are (if you've been following the news) distressed that college is to stressful and demanding, that grades and tests are oppressive, and that punctuality, grammar, and mathematical standards are arbitrary and oppressive.

No room for success there.