generis_, not merely an exported Teuton. Egypt, says Bunsen, was
peopled by a colony from Western Asia; but the genius and physiognomy
of Egypt are peculiar and its own. Mr. Pococke will have it that Greece
was a migrated India: it was, of course, a migration from some place
that first planted the Hellenic stock in Europe; but if the man who
carved the Zeus, and built the Parthenon, and wrote the "Prometheus"
and the "Phaedrus," were a copy, where shall we find the original?
Indeed, there has never been a great migration that did not result in a
new form of national genius. And it is the thoroughness of the
transformations thus induced which makes the chief difficulty in
tracing the affinities of peoples.

So it is that the world is enriched. Every new form of man establishes
another current in those reciprocations of thought, in those electrical
streams of sympathy,--of wholesome attraction and wholesome
repulsion,--by which the intellectual life is kindled and quickened.
Thought begins not until two men meet. Col. Hamilton Smith makes it
quite clear that civilization has found its first centres there where
two highways of national movement crossed, and dissimilar men looked
each other in the face. They have met, it may be, with the rudest kind
of greetings; but have obtained good thoughts from hard blows, and
beaten ideas _out_ of each other's heads, if not _into_ them, according
to the ancient pedagogic tradition. Higher culture brings higher terms
of meeting; traffic succeeds war, conversation follows upon traffic;
ever the necessity of various men to each other remains. There is no
pure white light until seven colors blend; so to the mental
illumination of humanity many hues of national genius must consent: and
the value of life to all men is greater so soon as a new man has made
his advent.