Main instruments...............

"More thorough and scientific medicines employed, even equally free of charge, by doctors of the first reputation, would not have brought nearly so many poor people together and, above all, would not have done them so much good.   There would have been lacking the main instruments of healing - prevention, respect, faith, and gratitude.  Man is composed of a soul and a body and it is the that governs the later.  The wounded who have received consolation, the sick who have been persuaded to hope are already in a state to be cured;  their blood circulates better, their nerves are strengthened, sleep returns, and the body revives,  Nothing is more efficacious than confidence; ..."

-Duff Cooper,  Talleyrand