empire extended itself gradually in the consciousness of its power; the
cohesion of the Celts in an empire or under one king was made impossible
by their migrations and diffusion. Their unity, such as it was, was
broken by the revolt of the Teutonic tribes, and their subjugation was
completed by Rome. The dreams of wide empire remained dreams. For the
Celts, in spite of their vigour, have been a race of dreamers, their
conquests in later times, those of the spirit rather than of the mailed
fist. Their superiority has consisted in imparting to others their
characteristics; organised unity and a vast empire could never be
theirs.

FOOTNOTES:

[6] Ripley, _Races of Europe_; Wilser, _L'Anthropologie_, xiv. 494;
Collignon, _ibid._ 1-20; Broca, _Rev. d'Anthrop._ ii. 589 ff.

[7] Sergi, _The Mediterranean Race_, 241 ff., 263 ff.

[8] Keane, _Man, Past and Present_, 511 ff., 521, 528.

[9] Broca, _Mem. d'Anthrop._ i. 370 ff. Hovelacque thinks, with Keane,
that the Gauls learned Celtic from the dark round-heads. But Galatian
and British Celts, who had never been in contact with the latter, spoke
Celtic. See Holmes, _Cæsar's Conquest of Gaul_, 311-312.

[10] Cæsar, i. 1; Collignon, _Mem. Soc. d'Anthrop. de Paris_, 3{me} ser.
i. 67.

[11] Cæsar, i. 1.