65 It is a cause for wonder that though they do not believe in the resurrection, yet in their kindly care they make provision that the human race should not perish, and so say that souls pass and migrate into other bodies that the world may not pass away. But let them say which is the most difficult, for souls to migrate, or to return; come back to that which is their own, or seek for fresh dwelling places.
Source: On the Death of Satyrus (New Advent)