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13. Knowledge Criteria / D. Scepticism / 5. Dream Scepticism

[apparent reality may be just a false dream]

7 ideas
What evidence can be brought to show whether we are dreaming or not? [Plato]
Dreams aren't a serious problem. No one starts walking round Athens next morning, having dreamt that they were there! [Aristotle]
You know you were dreaming when you wake, but there might then be a greater awakening from that [Zhuangzi (Chuang Tzu)]
Did Chuang Tzu dream he was a butterfly, or a butterfly dream he was Chuang Tzu? [Zhuangzi (Chuang Tzu)]
Waking actions are joined by memory to all our other actions, unlike actions of which we dream [Descartes]
Dreams must be false because they seem absurd, but dreams don't see waking as absurd [Hobbes]
Dreams can be explained fairly scientifically if we assume a physical world [Russell]