The Commens Dictionary
Quote from ‘On the Logic of Drawing History from Ancient Documents Especially from Testimonies (Logic of History)’
A practical belief is what a man proposes to go upon. A decision is more or less pressing. What ought it to be? That must depend upon what the purpose of his action is. What then, is the purpose of a man? That is the question of pure ethics, a very great question which must be disposed of before the logic of practical belief can be entered upon to any good effect.
EP 2:85; CP 7.185
‘Practical Belief’ (pub. 25.10.15-12:41). Quote in M. Bergman & S. Paavola (Eds.), The Commens Dictionary: Peirce's Terms in His Own Words. New Edition. Retrieved from http://www.commens.org/dictionary/entry/quote-logic-drawing-history-ancient-documents-especially-testimonies-logic-0.