Dream argument
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The dream argument is the postulation that the act of dreaming provides preliminary evidence that the senses trusted to distinguish reality from illusion should not be fully trusted, and therefore, an
The Dream of Human Life, by unknown artist, based on Michelangelo’s drawing The Dream, c. 1533
Philosophical skepticism
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Philosophical skepticism is a family of philosophical views that question the possibility of knowledge. It differs from other forms of skepticism in that it even rejects very plausible knowledge claim
Skeptics in Raphael's School of Athens painting. 1. Pythodorus 2. Arcesilaus of Pitane 3. Carneades of Cyrene 4. Pyrrho of Elis 5. Timon of Phlius 6. Theodorus the Atheist of Cyrene
Pyrrho of Elis, marble head, Roman copy, Archeological Museum of Corfu
Augustine of Hippo