American National Red Cross, The American Red Cross Bulletin… (1909)
“ Man in his primitive state and in his more civilized life believes there was a superior power for good, and his mind, requiring a material expression of that unseen source, used the serpent as a symbol of power and wisdom. Without this the rod of Esculapius would be impotent over disease and the wand of Mercury would have no authority over trade or commerce. The cultured Greeks, therefore, having great respect for the healing art, honored it with the most significant and expressive symbol of the highest attributes conducive to the welfare of the race. ”
