The love of humanity is a thing supposed to be professed only by vulgar and officious philanthropists, or by saints of a superhuman detachment and universality. As a matter of fact, love of humanity is the commonest and most natural of the feelings of a fresh nature, and almost every one has felt it alight capriciously upon him when looking at a crowded park or a room full of dancers. The love of those whom we do not know is quite as eternal a sentiment as the love of those whom we do know. In our friends the richness of life is proved to us by what we have gained; in the faces in the street the richness of life is proved to us by the hint of what we have lost. And this feeling for strange faces and strange lives, when it is felt keenly by a young man, almost always expresses itself in a desire after a kind of vagabond beneficence, a desire to go through the world scattering goodness like a capricious god. 

— Chesterton, from Robert Browning (1903)