Parsing Obama

Parsing the Left actually.
 
Consider this little gem from last night's speech:

And most of all, after a decade of passionate debate, we must recapture the common purpose that we shared at the beginning of this time of war. For our nation draws strength from our differences, and when our union is strong no hill is too steep and no horizon is beyond our reach.

So what is it?  "Common purpose" or "differences", unity or diversity?   I submit that it's chiefly liberals who actually think in such a confused fashion.