Money quote:

"One thing is clear: Ours is a charitable nation. Without the creation of wealth our system affords, there would be little of the giving that the world depends on."

This, in itself, is not a complete argument in favor of capitalism, free markets or low taxes...though my affinity for these things is well documented here. However, it is something for people to think about every time they plan on supporting government plans to pay for this or that by simply increasing the tax burdens on the richest x% of Americans, including many, many people who aren't even nearly this rich who also give handsomely to charitable organizations.