Benjamin Rush,
Medical Inquiries and Observations…
“ As I consider virtue and vice to consist in action, and not in opinion, and as this action has its seat in the will, and not in the conscience, I shall confine my inquiries chiefly to the influence of physical causes upon that moral power of the mind, which is connected with volition, although many of these causes act likewise upon the conscience, as I shall show hereafter. The state of the moral faculty is visible in actions, which affect the well-being of society. ”
