Combining Philosophers

Ideas for Diogenes Laertius, Henry E. Kyburg Jr and Mary Anne Warren

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13. Knowledge Criteria / A. Justification Problems / 2. Justification Challenges / a. Agrippa's trilemma

1816	Sceptics say demonstration depends on self-demonstrating things, or indemonstrable things [Diog. Laertius]
	Full Idea: Sceptics say that every demonstration depends on things which demonstrates themselves, or on things which can't be demonstrated.
	From: Diogenes Laertius (Lives of Eminent Philosophers [c.250], 9.Py.11)
	A reaction: This refers to two parts of Agrippa's Trilemma (the third being that demonstration could go on forever). He makes the first option sound very rationalist, rather than experiential.