ON WEDDING RINGS
According to The Yearbook of Daily Recreation and Information (1832), the wedding ring is worn on the fourth finger of the left hand because it was once thought that a vein ran directly from this finger to the heart. The yearbook cites Dutch physician Levinus Lemnius (1505-68), who wrote that he would resuscitate those "who are fallen in a swoon by pinching this joint, and by rubbing the ring of gold with a little saffron; for ... it passeth to the heart and refresheth the fountain of life, unto which this finger is jointed. Wherefore antiquity thought fit to compass it about with gold."
Bertolt Brecht (1898-1956)