Teilhard de Chardin, Pierre - Pensees - Annihilation
Type of Spiritual Experience
The description could be applied to both rebirth and annihilation, they are both as bad [or as good!] as one another.
A description of the experience
Teilhard de Chardin - Pensees
Clearly the believer knows that at the price of this sacrifice he is gaining a unity greatly superior to that which he abandoned. But who can tell the anguish of this metamorphosis? Between the moment when he consents to dissolve his inferior unity and that other, rapturous moment he arrives at the threshold of his existence… [he] hovers over an abyss of disintegration and annihilation. The salvation of the soul must be bought at the price of a great risk incurred and accepted