Daniel Kahneman, a Nobel laureate and one of the founders of behavioral economics, explains in a TED talk how our “experiencing selves” and “remembering selves” perceive happiness differently:

Also, check out Michael Lewis’s lively Vanity Fair profile of Kahneman, which notes, among other things, that the psychologist has been trying to collaborate on a paper with one of his harshest critics. “Most people after they win the Nobel Prize just want to go play golf,” says one of Kahneman’s colleagues. “Danny’s busy trying to disprove his own theories that led to the prize. It’s beautiful, really.”