Charles Sanders Peirce Quotes
Effort supposes resistance.
Citations
Peirce, Charles Sanders. Collected Papers of Charles Sanders Peirce, Volume 1: Principles of Philosophy. Edited by Charles Hartshorne and Paul Weiss, Harvard University Press, 1931.
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Charles Sanders Peirce was an American philosopher, logician, mathematician and scientist who is sometimes known as "the father of pragmatism".