As far as life is concerned, there is no such thing as "Nature". There are only homes. Home is that environment to which the individual has become adapted; and almost everything is unnatural outside his range of adaptation. Harmonious equilibrium with nature is an abstract concept with a Platonic beauty but lacking the flesh and blood of life. It fails, in particular, to convey the creative emergent quality of human existence.

In man, at least, satisfaction is commonly followed by boredom.

One may wonder indeed whether the pretense of superior health is not itself rapidly becoming a mental aberration.

Clearly, health and disease cannot be defined merely in terms of anatomical, physiological, or mental attributes. Their real measure is the ability of the individual to function in a manner acceptable to himself and to the group of which he is a part.

Each civilization has its own kind of pestilence and can control it only by reforming itself.

With reference to life there is not one nature; there are only associations of states and circumstances, varying from place to place and from time to time.

A sense of continuity with the rest of creation is a form of religious experience essential to sanity.