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

Human diversity makes tolerance more than a virtue; it makes it a requirement for survival.

Man not only survives and functions in his environment, he shapes it and he is shaped by it.

There is a demon in technology. It was put there by man and man will have to exorcise it before technological civilization can achieve the eighteenth-century ideal of humane civilized life.

...Search for the cause may be a hopeless pursuit because most disease states are the indirect outcome of a constellation of circumstances.

But too often the goal of the planners is a universal gray state of health corresponding to absence of disease rather than to a positive attribute conducive to joyful and creative living. This kind of health will not rule out and may even generate another form of ill, the boredom which is the penalty of a formula of life where nothing is left unforeseen.

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