You are a changeling. You are linked by a genetic chain to all the vertebrates. You were the size of a rat. You ate insects. That is what makes it true.
Life is indefinite departure.
That is why we are all orphans. That is why you must find your own way. Wanderers eastward, wanderers west. Tis that every mother's son Travails with a skeleton. It is within the individual that the universe will be regained.