Return of Tarzan — Edgar Rice Burroughs

The second volume in the magnificent series about TARZAN, in which Lord Greystoke, whom Tarzan now knows himself to be, is challenged by the sophisticated evils of civilisation, and proves that the standards of honor practised by his ancestors, combined with the honest values he learned in the jungle as a boy, are more than a match for the vicious gangs that prey on men who live in cities.

And having saved his friends, Tarzan turns his back on civilisation and returns to the primeval forest to find himself a mate.