Sometimes in rare cases there is a distinct memory of all that passes in the sleeping and the waking states, and we have read of one young man whose sleeping consciousness was so continuous that he led, to all intents and purposes, two lives.

When he slept he resumed his dream existence at the point when he waked, just as we resume our consciousness at the point when we fall asleep.

It was just as real to him as the life which he lived when awake.

It was actual, progressive, continuous, but entirely different, holding no relation whatever to his waking life.

Of his two existences he preferred that which was spent in sleep, as more vivid, more varied, and more pleasurable.