Full Idea
Logicians have too much neglected the study of vagueness, not suspecting the important part it plays in mathematical thought. It is the antithetical analogue of generality.
Gist of Idea
Vagueness is a neglected but important part of mathematical thought
Source
Charles Sanders Peirce (Critical Common-Sensism [1905], I)
Book Reference
Peirce,Charles Sanders: 'Philosophical Writings of Peirce', ed/tr. Buchler,Justus [Dover 1940], p.294