Let the surgeon take care to regulate the whole regimen of the patient's life for joy and happiness by promising that he will soon be well, by allowing his relatives and special friends to cheer him and by having someone tell him jokes, and let him be solaced also by music on the viol or psaltery. The surgeon must forbid anger, hatred, and sadness in the patient, and remind him that the body grows fat from joy and thin from sadness.
Henri de MondevilleOften the confidence of the patient in his physician does more for the cure of his disease than the physician with all his remedies. Reasserting the statement by Avicenna.
Henri de Mondeville