Digital Companion to C. S. Peirce
Some Wit, Wisdom & Bewilderment
I do not call the solitary studies of a single man a science. It is only when a group of men, more or less in intercommunication, are aiding and stimulating one another by their understanding of a particular group of studies as outsiders cannot understand them, that I call their life a science.
Adirondack Lectures, 1905