The Commens Dictionary
Quote from ‘Lowell Lectures. 1903. Lecture 3. 1st draught’
Mathematics is the science of hypotheses, – the science of what is supposable. Supposable does not mean directly imaginable, it means what makes sense.
MS [R] 458:3-4
‘Mathematics’ (pub. 25.09.14-15:01). 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-lowell-lectures-1903-lecture-3-1st-draught.