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'fragments/reports', 'On the Happy Life' and 'Outlines of Pyrrhonism'
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5 ideas
13. Knowledge Criteria / D. Scepticism / 1. Scepticism
1870
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The basis of scepticism is the claim that every proposition has an equal opposing proposition [Sext.Empiricus]
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Full Idea:
The main basic principle of the sceptic system is that of opposing to every proposition an equal proposition.
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From:
Sextus Empiricus (Outlines of Pyrrhonism [c.180], I.12)
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13. Knowledge Criteria / D. Scepticism / 3. Illusion Scepticism
1882
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The necks of doves appear different in colour depending on the angle of viewing [Sext.Empiricus]
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Full Idea:
The necks of doves appear different in hue according to the differences in the angle of inclination.
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From:
Sextus Empiricus (Outlines of Pyrrhonism [c.180], I.120)
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1881
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The same oar seems bent in water and straight when out of it [Sext.Empiricus]
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Full Idea:
The same oar seems bent when in the water but straight when out of the water.
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From:
Sextus Empiricus (Outlines of Pyrrhonism [c.180], I.119)
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1872
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The same tower appears round from a distance, but square close at hand [Sext.Empiricus]
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Full Idea:
The same tower appears round from a distance, but square close at hand.
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From:
Sextus Empiricus (Outlines of Pyrrhonism [c.180], I.32)
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1873
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If we press the side of an eyeball, objects appear a different shape [Sext.Empiricus]
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Full Idea:
When we press the eyeball at one side the forms, figures and sizes of the objects appear oblong and narrow.
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From:
Sextus Empiricus (Outlines of Pyrrhonism [c.180], I.47)
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