Is Romney Dangerous?

Charles Blow thinks so:

I have no personal gripe with Romney. I don’t believe him to be an evil man. Quite the opposite: he appears to be a loving husband and father. Besides, evil requires conviction, which Romney lacks. But he is a dangerous man. Unprincipled ambition always is. Infinite malleability is its own vice because it’s infinitely corruptible by others of ignoble intentions.

Andrew Sprung makes a related argument:

There is opportunist Romney, who will say anything and adopt any position to get elected, and there is committed Romney, whose current policy positions have been set in concrete by his extremist party. He is not an Etch-A-Sketch, who can shake himself at will, but a Ouija Board, to be played by the GOP base … He has no core, but he's been cast in a mold that won't be broken until the GOP transforms itself. That is, until hell freezes over.