Later in his life Schiller became famous for his attacks on logic in his textbook, "Formal Logic". By then, Schiller's pragmatism had become the nearest of any of the classical pragmatists to an ordinary language philosophy. Schiller sought to undermine the very possibility of formal logic, by showing that words only had meaning when used in context. The least famous of Schiller's main works was the constructive sequel to his destructive book "Formal Logic". In this sequel, "Logic for Use", Schiller attempted to construct a new logic to replace the formal logic that he had criticized in "Formal Logic". What he offers is something philosophers would recognize today as a logic covering the context of discovery and the hypothetico-deductive method.