Throughout history, Christianity has been interpreted as giving an affirmative answer to questions about the reality of the three great topics of Western philosophy: namely, God, the soul, and life everlasting. For centuries, most Christian thinkers have believed in the existence of the souls of men and beasts, as it used to be put. Animals and humans are composed of an immaterial entity—a soul, a life principle, a ground of sentience—and a body. More specifically, a human person is a unity of two distinct entities—body and soul. The human soul, while not by nature immortal, is nevertheless capable of entering an intermediate disembodied state upon death, however incomplete and unnatural this state may be, and, eventually, being reunited with a resurrected body.