Pathological states are the consequence of several determinate factors acting simultaneously...The manifestations of any given agent differ profoundly from one person to another. ...Each noxious agent can express itself by a great variety of different pathological states. ...Different agents can elicit similar reactions. ...The total environment and the (interior medium) constitute a multifactorial system.

Nature always strikes back. It takes all the running we can do to remain in the same place.

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

The mechanisms of vis medicatrix naturæ—the most healing power of nature—are so effective that most diseases are self-terminating.

Human destiny is bound to remain a gamble, because at some unpredictable time and in some unforeseeable manner nature will strike back.

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

There is an unbroken continuum from the wisdom of the body to the wisdom of the mind, from the wisdom of the individual to the wisdom of the race.