Last week a few HuffPost editors and I were treated to a visit by Bill Drayton and Mary Gordon. Bill Drayton is the founder of Ashoka and a longtime champion of social entrepreneurship, a term that he coined and that has now spread across the world. Mary Gordon is a former kindergarten teacher who founded Roots of Empathy, an organization dedicated to teaching emotional literacy and promoting empathy in children. As Mary told us, empathy is a two-way street and is best nurtured by example. Philosophers have known this for centuries. "No one can live happily who has regard for himself alone and transforms everything into a question of his own utility," wrote the first-century Stoic philosopher Seneca. And in practically every religious tradition and practice, giving of oneself is a key step on the path to spiritual fulfillment.