Now let us reconsider the example of our swimmer and the stream. The swimmer is something more than a mere "heredity." He is a man, and he has learnt to swim. Therefore in his battle with the stream of environment he is using heredity and environment For environment taught him to swim.

Let us take another simile. A man is rowing a boat across a bay. The tide, the currents, and the wind may be regarded as environments. All these environments may be with him, or against him. Or the tide may be against him, and the wind in his favour, and the currents dangerous if not avoided.

But "the man" is largely what environments have made him. His knowledge of rowing came from environment, his knowledge of the bay is environment, his knowledge of the run and position of the dangerous currents is environment, the boat and the oars belong to his environment.

And with all the useful and favourable environments, plus his hereditary qualities, he fights the adverse environments of the wind, and the tide, and the currents.

Now, let us suppose the sea to be rough, and the tide and wind strong, and against the oarsman. And then let us imagine the cases of two men, one of whom was an expert sailor, in a good boat, well found, and one a landsman, who could not row, who did not know the bay, who did not understand wind and tide, who was ignorant of the currents, who had bad oars and a leaky boat.

It is evident that the sailor would have a chance of getting safely across the bay, and that the landsman would be in grave peril of being capsized, or carried out to sea.

And the difference between the sailor and the landsman would be entirely a difference of environment.

But suppose, farther, that the sailor was of healthy descent, that he was, by heredity, strong, and brave, and intelligent; and suppose that the landsman was a degenerate: weak, nervous, fainthearted, and stupid; then the difference would be one of heredity and environment.

And if the landsman were drowned and the sailor came safely to shore, should we curse and revile the one, and applaud and reward the other. Or should we take the sailor's success as a matter of course, and give our pity to the landsman?

Well: in such a crazy boat, with such useless oars, with such a faint heart, a lack of knowledge and skill, and such a feeble mind, does the "Bottom Dog" put out, to wrestle with the winds and storms, and escape the dangerous currents of life.