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