""Death and Its Mystery Before Death: Proofs of the Existence of the Soul"" is a book written by Camille Flammarion, a French astronomer and spiritualist. The book is a collection of stories and accounts that explore the idea of the soul's existence and what happens to it before death. Flammarion presents various cases of people who have had mystical experiences, near-death experiences, and visions of the afterlife. He argues that these experiences...