Combining Texts
Ideas for
'Parmenides', 'Posterior Analytics' and 'Logic (Encyclopedia I)'
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18 ideas
2. Reason / A. Nature of Reason / 1. On Reason
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11283
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There is pure deductive reasoning, and explanatory demonstration reasoning [Aristotle, by Politis]
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224
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When questions are doubtful we should concentrate not on objects but on ideas of the intellect [Plato]
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2. Reason / A. Nature of Reason / 3. Pure Reason
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22081
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Let thought follow its own course, and don't interfere [Hegel]
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2. Reason / A. Nature of Reason / 5. Objectivity
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15626
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Categories create objective experience, but are too conditioned by things to actually grasp them [Hegel]
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2. Reason / A. Nature of Reason / 6. Coherence
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1672
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Maybe everything could be demonstrated, if demonstration can be reciprocal or circular [Aristotle]
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2. Reason / B. Laws of Thought / 3. Non-Contradiction
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15616
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If truth is just non-contradiction, we must take care that our basic concepts aren't contradictory [Hegel]
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2. Reason / B. Laws of Thought / 4. Contraries
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1684
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Two falsehoods can be contrary to one another [Aristotle]
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2. Reason / B. Laws of Thought / 5. Opposites
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232
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Opposites are as unlike as possible [Plato]
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2. Reason / C. Styles of Reason / 1. Dialectic
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8937
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Plato's 'Parmenides' is the greatest artistic achievement of the ancient dialectic [Hegel on Plato]
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21767
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Dialectic is seen in popular proverbs like 'pride comes before a fall' [Hegel]
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15638
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Dialectic is the moving soul of scientific progression, the principle which binds science together [Hegel]
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15639
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Socratic dialectic is subjective, but Plato made it freely scientific and objective [Hegel]
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15615
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Older metaphysics became dogmatic, by assuming opposed assertions must be true and false [Hegel]
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2. Reason / D. Definition / 4. Real Definition
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12145
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Definitions are of what something is, and that is universal [Aristotle]
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12075
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An Aristotelian definition is causal [Aristotle, by Witt]
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12384
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Definition by division needs predicates, which are well ordered and thorough [Aristotle]
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9066
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You can define objects by progressively identifying what is the same and what is different [Aristotle]
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2. Reason / D. Definition / 6. Definition by Essence
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12382
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What it is and why it is are the same; screening defines and explains an eclipse [Aristotle]
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