Man is made of two things: being and non-being. Man is a strange phenomenon. Something in him is very existential, and something in him is very non-existential. The existential is sex, and the non- existential is death; and man is a combination of sex and death. And unless you know both without any prejudice, you will not be able to transcend, you will not be able to become a real meditator.
One has to face these two facts. These are the ultimate facts of life, and these are the tests: if you face them, unafraid, they are holding the keys to eternal life. It is through them that you will be able to enter into the kingdom of God.