Editing James Mark Baldwin (section)

===Later life===
In 1903, partly as a result of a dispute with Princeton president [[Woodrow Wilson]] and in part due to an offer involving more pay and less teaching, he moved to a professorship of philosophy and psychology at [[Johns Hopkins University]]. Here, he re-opened the experimental laboratory that had been founded by [[G. Stanley Hall]] in 1884 (but had closed with Hall's departure to take over the presidency of [[Clark University]] in 1888).

In Baltimore Baldwin started to work on ''Thoughts and Things: A Study of the Development and Meaning of Thought, Or Genetic Logic'' (1906), a densely integrative rendering of his ideas culminating in ''Genetic Theory of Reality: Being the Outcome of Genetic Logic as Issuing in the Aesthetic Theory of Reality called Pancalism'' (1915). This book introduced the concept that knowledge grows through childhood in a series of distinct stages that involve interaction between innate abilities and environmental feedback, a proposal that was taken back by Piaget. He further stated that the initial physical development gives way to language and cognitive abilities such that the child emerges as a result of social and physical growth.

In Baltimore also Baldwin was arrested in a raid on a "colored" brothel (1908), a scandal that put an end to his American career. Forced to leave Johns Hopkins, he looked for residence in Paris. He was to reside in France till his death in 1934.<ref>Hothersall, D. (2004)</ref>

His first years (1908–1912) in France were interrupted by long stays in [[Mexico]] where he advised on university matters and lectured at the School of Higher Studies at the National University in [[Mexico City]]. His ''Darwin and the Humanities'' (1909) and ''Individual and Society'' (1911) date from this period.
In 1912 he took permanent residence in Paris.

Baldwin's residence in France resulted in his pointing out the urgency of American non-neutral support for his new hosts on the French battlefields of [[World War&nbsp;I]]. He published ''American Neutrality, Its Cause and Cure'' (1916) for the purpose, and when in 1916 he survived a German torpedo attack on the {{ship|SS|Sussex||2}} in the [[English Channel]]&nbsp;– on the return trip from a visit to [[William Osler]] at Oxford&nbsp;– his open telegram to the president of the United States on the affair became frontpage news (''New York Times''). With the entry of America in the war (1917) he helped to organize the Paris branch of the American Navy League, acting as its Chairman till 1922. In 1926 his memoirs ''Between Two Wars (1861-1921)'' were published. He died in Paris on November 8, 1934.