The commercial traveller, a personage unknown to antiquity, is one of the striking figures created by the manners and customs of our present epoch. May he not, in some conceivable order of things, be destined to mark for coming philosophers the great transition which welds a period of material enterprise to the period of intellectual strength? Our century will bind the realm of isolated power, abounding as it does in creative genius, to the realm of universal but levelling might; equalizing all products, spreading them broadcast among the masses, and being itself controlled by the principle of unity, -the final expression of all societies