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Theory of Categories
Charles Peirce presents a paper containing the Cenopythagorean Categories.
-Firstness (Ideas, Chance, Possibility)
-Secondness (Brute Facts, Actuality)
-Thirdness (Habits, Laws, Necessity)
Became the pillars of his philosophy and explanations of philosophy for the remainder of his life. "Minute Logic", CP 2.87, c.1902 and A Letter to Lady Welby, CP 8.329, 1904.
http://www.commens.org/dictionary/term/categories -
The Fixation of Belief (Video)
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The First Rule of Logic
Peirce states that the first, and "in one sense, the sole", rule of reason is that, to learn, one needs to desire to learn and desire it without resting satisfied with that which one is inclined to think. Opening a dialogue to the barriers to inquiry. Peirce (1899 MS), "F.R.L." [First Rule of Logic], Collected Papers of Charles Sanders Peirce, 1.135–40.
https://web.archive.org/web/20120106071421/http://www.princeton.edu/~batke/peirce/frl_99.htm -
Pragmaticism
Peirce coined the term "Pragmaticism" to distance himself from pragmatism, generating a method for the clarification of ideas. Making commitments to the spirit of strict logic, the immutability of truth, the reality of infinity, and the difference between (1) actively willing to control thought, to doubt, to weigh reasons, and (2) willing not to exert the will, willing to believe. Peirce (1906) "The Basis of Pragmaticism" EP 2:372-3
http://www.commens.org/dictionary/term/philosophy