Once the soul has left the body it had to walk across a bridge as narrow as a knife edge, with paradise on the right and, on the left, a series of circles that lead down into the darkness inside the earth. Before crossing the bridge, each person had to place all his virtues in his right hand and all his sins in his left, and the imbalance between the two meant that the person always fell towards the side to which his actions on Earth had inclined him.