We cannot get away from the fact that we are physically determined.

Yet, physical determinations have been surmounted by human nature in a way to which the rest of the animal world affords no parallel.

Thus man, as the old saying has it, makes love all the year round.

Seasonal changes of course affect him, yet he is no slave of the seasons.

And so it is with the many other elements involved in the "geographic control." The "road," for instance--that is to say, any natural avenue of migration or communication, whether by land over bridges and through passes, or by sea between harbours and with trade-winds to swell the sails--takes a hand in the game of life, and one that holds many trumps; but so again does the non-geographical fact that your travelling-machine may be your pair of legs, or a horse, or a boat, or a railway, or an airship.