Our knowledge of the external world is derived from our senses, and our senses are often unreliable.
Cogito ergo sum
Meditations on First Philosophy, Meditation I
1641
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"The senses alone are not sufficient to give us a clear and distinct knowledge of things."
Controversial"I always wanted to learn to distinguish the true from the false, in order to see clearly in my actions and to walk with confidence in this life."
Shocking"I suppose therefore that all the things I see are false imaginations; I believe that nothing ever existed of all that my fallacious memory represents to me."
Strange & Unusual"I believe that all my dreams are illusions."
Controversial"The greatest good for each of us is to live freely and happily."
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