Rene Descartes — "Our knowledge of the external world is derived from our senses, and our senses a…"
Our knowledge of the external world is derived from our senses, and our senses are often unreliable.
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More from Rene Descartes
"Doubt is the origin of wisdom."
"I would not advise anyone to read my books who has not the leisure and inclination to meditate seriously with me."
"To be able to live without fear, without anxiety, without sadness, and without any other passion which could disturb the tranquillity of the soul."
"I perceived it was possible to arrive at knowledge highly useful in life; and that, instead of the speculative philosophy usually taught in the Schools, we might find a practical, by means of which, k…"
"I had rather be dead than live without philosophy."