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Ideas of Diogenes Laertius, by Text

[Greek, 210 - 270, Born at Laerte.]

250 Lives of Eminent Philosophers
3.1.23 p.132 Induction moves from some truths to similar ones, by contraries or consequents
     Full Idea: Induction is an argument which by means of some admitted truths establishes naturally other truths which resemble them; there are two kinds, one proceeding from contraries, the other from consequents.
     From: Diogenes Laertius (Lives of Eminent Philosophers [c.250], 3.1.23)
3.1.52 p.143 Dialectic involves conversations with short questions and brief answers
     Full Idea: Dialectic is when men converse by putting short questions and giving brief answers to those who question them.
     From: Diogenes Laertius (Lives of Eminent Philosophers [c.250], 3.1.52)
6.Men.3 p.258 Cynics believe that when a man wishes for nothing he is like the gods
     Full Idea: Cynics believe that when a man wishes for nothing he is like the gods.
     From: Diogenes Laertius (Lives of Eminent Philosophers [c.250], 6.Men.3)
9.11.11 p.418 When sceptics say that nothing is definable, or all arguments have an opposite, they are being dogmatic
     Full Idea: When sceptics say that they define nothing, and that every argument has an opposite argument, they here give a positive definition, and assert a positive dogma.
     From: Diogenes Laertius (Lives of Eminent Philosophers [c.250], 9.11.11)
9.Py.11 p.413 Sceptics say demonstration depends on self-demonstrating things, or indemonstrable things
     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.
9.Py.11 p.418 Scepticism has two dogmas: that nothing is definable, and every argument has an opposite argument
     Full Idea: Sceptics actually assert two dogmas: that nothing should be defined, and that every argument has an opposite argument.
     From: Diogenes Laertius (Lives of Eminent Philosophers [c.250], 9.Py.11)
10.28 p.473 Cyrenaic pleasure is a motion, but Epicurean pleasure is a condition
     Full Idea: Cyrenaics place pleasure wholly in motion, whereas Epicurus admits it as a condition.
     From: Diogenes Laertius (Lives of Eminent Philosophers [c.250], 10.28)