When there is no more hereditary wealth, privilege class, or prerogatives of birth, it becomes clear that the chief source of disparity between the fortunes of men lies in the mind.
—Alexis de Tocqueville
It is becoming more and more obvious that it is not starvation, not microbes, not cancer, but man himself who is mankind’s greatest danger, for the simple reason that there is no adequate protection against psychic epidemics, which are infinitely more devastating than the worst of natural catastrophes.
—Carl Jung