Leisure may be defined as free activity, labor as compulsory activity. Leisure does what it likes, labor does what it must, the compulsion being that of Nature, which in these latitudes leaves men no choice between labor and starvation.
Getting married, having children, and staying together long after all love has died, saying that it's for the good of the children (who are, apparently, deaf to the constant rows).
The hostile attitude of conquering nature ignores the basic interdependence of all things and events--that the world beyond the skin is actually an extension of our own bodies--and will end in destroying the very environment from which we emerge and upon which our whole life depends.