Charles Sanders Peirce Quotes
A sign, or representamen, is something which stands to somebody for something in some respect or capacity. It addresses somebody,that is, creates in the mind of that person an equivalent sign, or perhaps a more developed sign. That sign which it creates I call the interpretant of the first sign. The sign stands for something, its object. It stands for that object, not in all respects, but in reference to a sort of idea, which I have sometimes called the ground of the representamen.
Peirce, Charles Sanders. Collected Papers of Charles Sanders Peirce, Volume 2: Elements of Logic. Edited by Charles Hartshorne and Paul Weiss, Harvard University Press, 1932, p. 135.
Charles Sanders Peirce was an American philosopher, logician, mathematician and scientist who is sometimes known as "the father of pragmatism".