Men are naturally most impressed by diseases which have obvious manifestations, yet some of their worst enemies creep on them unobtrusively.

Human life is now molded to a large extent by the changes that man has brought about in his external environment and by his attempts at controlling body and soul.

Wherever human beings are concerned, trend is not destiny.

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

Sometimes the more measurable drives out the most important.

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.

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