“Any one of us can live on through the good things we do - even much smaller things than saving a life. Every time you extend yourself for another person, you change our world for the better by putting them in the mood to pay it forward. You're also engaging in a form of flash-mentoring - very briefly acting as their guide for what our world can be, as opposed to what we've been allowing it to be: a society of glowering strangers putting their heads as they pass one another, stopping only to shout into their cellphones.”