“The soul is not a single unity; that is what it is destined to become, and that is what we call 'immortality'. Your soul is still composed of many 'selves', just as a colony of ants is composed of many single ants. You bear within you the spiritual remains of many thousand ancestors, the heads of your line. It is the same with all creatures. How could a chicken that is artificially hatched in an incubator immediately look for the right food, if the experience of millions of years were not stored inside it? The existence of 'instinct' indicates the presence of our ancestors in our bodies and in our souls.”