Man makes many great mistakes but there is one principal one, and that is that he goes through life thinking that he will stay here for ever. And since he is without preparation, the call naturally comes to him as a blow instead of as an invitation. When we think of the journey beyond, we begin to see how many there are in this world who do not even know that there is a hereafter. And the one who believes in the hereafter has his preconceived ideas about it; either a religious or a philosophical belief. But not even that suffices for our purpose. What suffices for our purpose is to become acquainted with the road along which we have to pass, and with the road whereby the soul descended to the earth. This road is the bridge that stands between the physical and the spiritual part of our own being, and therefore the nature of this journey is different.