Quote by Rene Descartes

When I consider this carefully, I find not a single property which with certainty separates the waking state from the dream. How can you be certain that your whole life is not a dream?


When I consider this carefully, I find not a single property

Summary

This quote, often attributed to philosopher René Descartes, raises a philosophical doubt about the distinction between the waking state and dreams. It contemplates the possibility that our entire lives could be a dream, challenging the certainty we have in perceiving reality. By highlighting the lack of distinguishing features between the two states, the quote encourages introspection and skepticism regarding the nature of our own existence. It prompts individuals to critically evaluate the boundaries between reality and the illusion of a dream, challenging their assumptions and urging them to question the true nature of their experiences.

By Rene Descartes
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