C. S. Peirce published the first full statement of pragmatism in his important works " How to Make Our Ideas Clear " (1878) and " The Fixation of Belief " (1877).  In "How to Make Our Ideas Clear" he proposed that a clear idea (in his study he uses concept and idea as synonymic) is defined as one, when it is apprehended such as it will be recognized wherever it is met, and no other will be mistaken for it. If it fails of this clearness, it is said to be obscure. He argued that to understand an idea clearly we should ask ourselves what difference its application would make to our evaluation of a proposed solution to the problem at hand. Pragmatism (a term he appropriated for use in this context), he defended, was a method for ascertaining the meaning of terms (as a theory of meaning). The originality of his ideas is in their rejection of what was accepted as a view and understanding of knowledge by scientists for some 250 years, . that, he pointed, knowledge was an impersonal fact. Peirce contended that we acquire knowledge as participants , not as spectators . He felt "the real" is which, sooner or later, information acquired through ideas and knowledge with the application of logical reasoning would finally result in. He also published many papers on logic in relation to ideas .