It is generally agreed that the most influential philosophers in America are Charles S. Peirce, William James and John Dewey. James's fame came rather suddenly in the latter half of his life—roughly, from 1880 to 1910; it flourished with the appearance of his Principles of Psychology (1890) and shortly thereafter with his advocacy of pragmatism and radical empiricism. James was acclaimed in England and Europe as well as in America. Peirce, on the other hand, was almost entirely neglected; his work remained unknown to all but a few philosophers and his chief acknowledgment was as a scientist and logician. His importance began to be recognized and his immense researches and writings studied some twenty-five years after his death. It was otherwise with Dewey. During his long lifetime his ideas not only engaged the reflections and critical discussions of philosophers, he also had a profound and contagious influence on education, the social sciences, aesthetics, and political theory and practice. In this respect his thought has reached a wider audience in America than that of either Peirce or James. In his day lawyers, labour leaders, scientists and several heads of state attested to the vitality of his wisdom.