Question: who deserves credit for popularizing and developing pragmatism and philosophy

title: Pragmatism
text: Peirce lectured and further wrote on pragmatism to make clear his own interpretation . While framing a conception 's meaning in terms of conceivable tests , Peirce emphasized that , since a conception is general , its meaning , its intellectual purport , equates to its acceptance 's implications for general practice , rather than to any definite set of real effects ( or test results ) ; a conception 's clarified meaning points toward its conceivable verifications , but the outcomes are not meanings , but individual upshots . Peirce in 1905 coined the new name pragmaticism `` for the precise purpose of expressing the original definition '' , saying that `` all went happily '' with James 's and Schiller 's variant uses of the old name `` pragmatism '' and that he nonetheless coined the new name because of the old name 's growing use in `` literary journals , where it gets abused '' . Yet in a 1906 manuscript he cited as causes his differences with James and Schiller. and , in a 1908 publication , his differences with James as well as literary author Giovanni Papini . Peirce in any case regarded his views that truth is immutable and infinity is real , as being opposed by the other pragmatists , but he remained allied with them on other issues .