Thomas Sowell on liberal principles -- or the lack thereof

As you may recall, a couple of weeks ago, I did a post about liberal principles, after I conceded to a friend that liberals did, in fact, have principles. Here's Thomas Sowell, utterly unaware of my post, but nonetheless voicing his own opinion on the subject:

Liberals may think of themselves as people who believe in certain principles but, if you observe their actual behavior, you are likely to discover that most liberals have a certain set of attitudes, rather than principles. Liberals may denounce "greed," for example, but in practice it all depends on whose greed. Nothing the government does is ever likely to be called "greed" by liberals. Even when the government confiscated more than half the income of some people in taxes, that was not greed, as far as the left was concerned. Nor is it greed in their eyes when local politicians across the country bulldoze whole working class neighborhoods, destroying homes that people spent a lifetime sacrificing to buy, and paying them less than the market value of those homes through legal chicanery.

I guess I can add his "attitudes" to my list of "principles," right?