By the time Dewey moved to Chicago at the age of thirty-five, he had already published two books on psychology and applied psychology. He had become dissatisfied with philosophy as pure speculation and was seeking ways to make philosophy directly relevant to practical issues. Moving away from an early interest in Hegel, Dewey proceeded to reject all forms of dualism and dichotomy in favor of a philosophy of experience as a series of unified wholes in which everything can be ultimately related.