Digital Companion to C. S. Peirce
Some Wit, Wisdom & Bewilderment
Comte, Poincaré, and Karl Pearson take what they consider to be the first impressions of sense, but which are really nothing of the sort, but are percepts that are products of psychical operations, and they separate these from all the intellectual part of our knowledge, and arbitrarily call the first real and the second fictions. These two words real and fictive bear no significations whatever except as marks of good and bad. But the truth is that what they call bad or fictitious, or subjective, the intellectual part of our knowledge, comprises all that is valuable on its own account, while what they mark good, or real, or objective, is nothing but the pretty vessel that carries the precious thought.
Lowell Lectures, 1903