Obama's post-presidential life: what does his second act have in store?

'There is nothing more pathetic in life than a former president,' said John Quincy Adams - but a year on, what to make of our most newly minted ex? There's the library. There's the memoir. There might be a foundation. Maybe some paid speeches. Perhaps a new hobby, like oil painting. Maybe, in the case of George HW Bush, accusations of groping by eight women. The life of a former president has a few set pieces, but still plenty of room for surprise. John Quincy Adams was elected to Congress. "The...