The Commens Dictionary
Quote from ‘Harvard Lectures on Pragmatism: Lecture III’
Category the Third is the Idea of that which is such as it is as being a Third, or Medium, between a Second and its First. That is to say, it is Representation as an element of the Phenomenon.
‘Thirdness’ (pub. 09.01.13-18:36). 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-harvard-lectures-pragmatism-lecture-iii-1.