This man divided signs into such categories as "rhemes," "dicisigns, and "arguments." He formulated 
This man divided signs into such categories as "rhemes," "dicisigns, and "arguments." He formulated a triadic "sign relation" out of the representamen, object, and interpretant. This man divided the scientific method into deduction, induction, and abduction. Another of his works defines the statement (*) "This is hard" as "This will not be scratched by many other substances," and argues that a statement's meaning is the set of all empirical observations that can be drawn from it. That article was published in Popular Science Monthly in a series containing "The Fixation of Belief." For 10 points, name this author of "How to Make Our Ideas Clear," the founder of pragmatism.
This man divided signs into such categories as "rhemes," "dicisigns, and "arguments."
Charles Sanders Peirce ("PURSE")