Hao Wang (1921-1995) was a prolific researcher and writer in mathematical logic, computer science, and philosophy. He is known for the close relation he developed with Kurt Godel during the last decade of the latter's life and the two books about Godel that he published after Godel's death. This volume of essays covers to some extent each of these fields of Wang's activity but with greatest emphasis on philosophy. Wang spent the first twenty-five years of his life in China and continued to identify himself as Chinese, and in later years he returned to China several times. The volume adds to...