Guest (2): What's the purpose of deep sleep as one of the bases of our life?
Prabhupāda: Deep sleep is forgetfulness. That's all.
Guest (2): Forgetfulness when I sleep, but...
Prabhupāda: Yes, when you become tired, you, or by intoxication, you sleep deep. This is material existence. Either this material activity or material dreaming or material deep sleep, they're all material. In spiritual life, oh, there is no sleep. There is no deep sleep or slight sleep or dream. That is everything actual. (pause) Any other questions?