"We may feel only anxious (or even sick) for a number of reasons which have no apparent connection with our conscience. Perhaps the most frequent indirect reaction of our conscience to being neglected is a vague and unspecific feeling of guilt and uneasiness, or simply a feeling of tiredness or listlessness. Sometimes such feelings are rationalized as guilt feelings for not having done this or that, when actually the omissions one feels guilty about do not constitute genuine moral problems. But if the genuine though unconscious feeling of guilt has become too strong to be silenced by superficial rationalizations, it finds expression in deeper and more intense anxieties and even in physical or mental sickness. 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."