III. Man's Life in Sleep and After Death

Perhaps you will say: But how does this concern me, if I cannot perceive it? True, you do not see it with your eyes, nor hear it with your ears. But no sooner have you passed over into the condition of sleep than the part of your astral body which belongs in waking life to your heart, becomes for you an eye,—becomes, in very fact, what we may call a heart-eye; and with this heart-eye you ‘see’ what is now taking place. For present-day mankind, the perception is a very dim one. Nevertheless it is more assuredly there; the heart-eye perceives the experiences of this first sphere of sleep.