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Full Idea
What has first to have itself proved is of little value.
Gist of Idea
Anything which must first be proved is of little value
Source
Friedrich Nietzsche (Twilight of the Idols [1889], 1.05)
Book Ref
Nietzsche,Friedrich: 'Twilight of the Idols and The Anti-Christ', ed/tr. Hollingdale,R.J. [Penguin 1972], p.31
8623 | Proof reveals the interdependence of truths, as well as showing their certainty [Euclid, by Frege] |
1885 | Proof moves from agreed premises to a non-evident inference [Sext.Empiricus] |
8627 | Leibniz is inclined to regard all truths as provable [Leibniz, by Frege] |
17495 | Proof aims to remove doubts, but also to show the interdependence of truths [Frege] |
16878 | We must be clear about every premise and every law used in a proof [Frege] |
2898 | Anything which must first be proved is of little value [Nietzsche] |
19067 | A successful proof requires recognition of truth at every step [Dummett] |
17773 | Proof shows that it is true, but also why it must be true [Mayberry] |