David Boaz explains on my behalf:

But liberals and conservatives have more in common than you might think.

Both believe in government magic. And they want you to believe in it too. They want you to believe the president can be Superman, Santa Claus and Mother Teresa all rolled into one and that he can cure poverty and racism, keep kids off drugs and keep families together. Magical thinking is cute among children. But adults should know that the world is complicated and that legislative actions often fail, or backfire, or have unintended consequences or disappear into bureaucratic sinkholes.

Boaz also has a fabulous description of liberals:

Liberals look at the 20th century's grand experiment of capitalism versus socialism — the United States versus the Soviet Union, Western Europe versus Eastern Europe, China versus Hong Kong — and somehow conclude that what the U.S. needs today is more socialism.

Hat tip to Cafe Hayek.