What did Barack Obama teach us?

Answer 1

In connection with the Peace Prize I will always remember the lesson that it is now more important to be politically correct that to actually make any contribution to peace. Even Obama acknowledged that he hadn't done anything yet when he accepted the prize. To quote from his acceptance speech:

I would be remiss if I did not acknowledge the considerable controversy that your generous decision has generated. In part, this is because I am at the beginning, and not the end, of my labors on the world stage. Compared to some of the giants of history who have received this prize - Schweitzer and King; Marshall and Mandela - my accomplishments are slight.