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Single Idea 18273

[filed under theme 5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth ]

Full Idea

A touchstone by which logical propositions may be distinguished from all others is that they result from a process of generalisation which has been carried to its utmost limits.

Gist of Idea

Logical truths are known by their extreme generality

Source

Bertrand Russell (The Theory of Knowledge [1913], p.129), quoted by J. Alberto Coffa - The Semantic Tradition from Kant to Carnap 7 'What'

Book Ref

Coffa,J.Alberto: 'The Semantic Tradition from Kant to Carnap' [CUP 1993], p.127

The 4 ideas from 'The Theory of Knowledge'

22315 There can't be a negative of a complex, which is negated by its non-existence [Potter on Russell]
23476 Logical constants seem to be entities in propositions, but are actually pure form [Russell]
23477 We use logical notions, so they must be objects - but I don't know what they really are [Russell]
18273 Logical truths are known by their extreme generality [Russell]