"In the dream state, the only essential difference from waking is the relative absence of sensory input, which makes dreaming a special case of perception without sensory input."

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Let us be satisfied simply with what sustains our present life, not with what pampers it. Let us pray to God for this, as we have been taught, so that we may keep our souls unenslaved and absolutely free from domination by any of the visible things loved for the sake of the body. Let us show that we eat for the sake of living, and not be guilty of living for the sake of eating. The first is a sign of intelligence, the second proof of its absence.

— Maximus the Confessor