"Why do we live in such terror of death? Because our instinctive desire is to live and to go on living, and death is a savage end to everything we hold familiar. We feel that when it comes we will be plunged into something quite unknown, or become someone totally different. We imagine we will find ourselves lost and bewildered, in surroundings that are terrifyingly unfamiliar. We imagine it will be like waking up alone, in a torment of anxiety, in a foreigh country, with no knowledge of the land or language, no money, no contacts, no passports, no friends...
Perhaps the deepest reason why we are afraid of death is because we do not know who we are. We believe in a personal, unique, and separate identityl but if we dare to examinine it, we find that this identity depends entirely on an endless collection of things to prop it up: our name, our "biography", our partners, family, home, job, friends, credit cards...It is on their fragile and transient support that we rely for our security. So when they are all taken away, will we have any idea of who we really are?"
The Tibetan Book of Living and Dying by Sogyal Rinpoche, p 16.