Research shows that willpower is more important than IQ. That’s why the point isn’t to become smarter, but to become more self-disciplined.

Willpower is having ice cream in the freezer and not eating it. Discipline is not bringing it into the house to begin with.

You can't cure stupid (2010)

Getting an education does not cure stupidity. It lessens ignorance

The real and effectual discipline which is exercised over a workman is ... that of his customers. It is the fear of losing their employment which restrains his frauds and corrects his negligence.

What win I, if I gain the thing I seek? A dream, a breath, a froth of fleeting joy. Who buys a minute's mirth to wail a week? Or sells eternity to 'get a toy? For one sweet grape who will the vine destroy?