Single Idea 14783

[catalogued under 5. Theory of Logic / C. Ontology of Logic / 3. If-Thenism]

Full Idea

Mathematics is purely hypothetical: it produces nothing but conditional propositions. Logic, on the contrary, is categorical in its assertions. True, it is a normative science, and not a mere discovery of what really is. It discovers ends from means.

Gist of Idea

Logic, unlike mathematics, is not hypothetical; it asserts categorical ends from hypothetical means

Source

Charles Sanders Peirce (The Nature of Mathematics [1898], II)

Book Reference

Peirce,Charles Sanders: 'Philosophical Writings of Peirce', ed/tr. Buchler,Justus [Dover 1940], p.142