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Single Idea 608

[filed under theme 2. Reason / B. Laws of Thought / 4. Contraries ]

Full Idea

With contradiction there can be no intermediate state, whereas with contrariety there can be.

Gist of Idea

There is no middle ground in contradiction, but there is in contrariety

Source

Aristotle (Metaphysics [c.324 BCE], 1055b02)

Book Ref

Aristotle: 'Metaphysics', ed/tr. Lawson-Tancred,Hugh [Penguin 1998], p.298


The 9 ideas with the same theme [could both be false, but can't both be true]:

Only one thing can be contrary to something [Plato]
The contrary of good is bad, but the contrary of bad is either good or another evil [Aristotle]
Both sides of contraries need not exist (as health without sickness, white without black) [Aristotle]
From one thing alone we can infer its contrary [Aristotle]
Contraries are by definition as far distant as possible from one another [Aristotle]
In "Callias is just/not just/unjust", which of these are contraries? [Aristotle]
There is no middle ground in contradiction, but there is in contrariety [Aristotle]
Two falsehoods can be contrary to one another [Aristotle]
Contrary pairs entail contradictions; one member entails negation of the other [Lipton]