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
Empiricism
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In philosophy, empiricism is an epistemological view which holds that true knowledge or justification comes either only or primarily from sensory experience and empirical evidence. It is one of severa
Francis Bacon
John Locke
G. Berkeley
David Hume