The Commens Dictionary
Quote from ‘L [R]’
The third group of sciences consists of so much of the activity of building up edifices of knowledge as is motivated by a desire of ministering to a human want, whether this desire have or have not an ulterior purpose. The are what we call the practical sciences. Many of them go by the name of arts. By far the greater part of all scientific labor is bestowed upon these sciences.
MS [R] 601:27
‘Practical Science’ (pub. 19.05.15-16:44). 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-l-r-4.