“One form of this anxiety is the fear of death; not the normal fear of having to die which every human being experiences in the contemplation of death, but a horror of dying by which people can be possessed constantly. This irrational fear of death results from the failure of having lived; it is the expression of our guilty conscience for having wasted our life and missed the chance of productive use of our capacities. To die is poignantly bitter, but the idea of having to die without having lived is unbearable.”