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

It is not man the ecological crisis threatens to destroy but the quality of human life.

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.

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

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.

The word "wilderness" occurs approximately three hundred times in the Bible, and all its meanings are derogatory.

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