This interview seems quite revealing:

Mr. Obama: Yeah. I’ve been spending a lot of time reading Lincoln. There is a wisdom there and a humility about his approach to government, even before he was president, that I just find very helpful.

Kroft: Put a lot of his political enemies in his cabinet.

Mr. Obama: He did.

Kroft: Is that something you’re considering?

Mr. Obama: Well, I tell you what, I find him a very wise man.