The Commens Dictionary
Quote from ‘The Regenerated Logic’
…possibility may be understood in many senses; but they may all be embraced under the definition that that is possible which, in a certain state of information, is not known to be false.
‘Possibility’ (pub. 11.08.17-10:10). 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-regenerated-logic-7.