The most important pathological effects of pollution are extremely delayed and indirect.

Eradication of microbial disease is a will-o'-the-wisp; pursuing it leads into a morass of hazy biological concepts and half truths.

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

Wherever human beings are concerned, trend is not destiny.

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

It is a disturbing fact that Western civilization, which claims to have achieved the highest standard of health in history, finds itself compelled to spend ever-increasing sums for the control of disease.

The very process of living is a continual interplay between the individual and his environment, often taking the form of a struggle resulting in injury or disease.