Professor Pete A.Y. Gunter began the study of philosophy at the University of Texas in the plan two honors program, from which he graduated in 1958. A Marshall scholar at Cambridge University (1958-1960), in 1963, he was awarded a Ph.D. from Yale University for his dissertation on the relation of intellect and intuition in the work of Henri Bergson. The present work is a thoroughgoing elaboration and development of this dissertation, brought up to date through contact with new developments in the sciences. Professor Gunter taught philosophy at Auburn University (Alabama) from 1962-1965, then at the University of Tennessee in Knoxville. In 1969, he moved to Denton, Texas, where he founded the department of philosophy at North Texas State University (now the University of North Texas).The more than 50 years in which Professor Gunter has taught at the University of North Texas have been characterized by a broad variety of interests. He has worked on several environmental projects, notably the creation and enlargement of the Big Thicket National Biological Preserve, the first such in the history of the National Park Service. He has written three books on the big thicket and edited and published two others. His 'The Big Thicket: A Challenge for Conservation' (Jenkins, 1972) was credited with playing a role in the establishment of the Preserve.Prof. Gunter has published 19 books, over 160 book reviews, and innumerable articles. Among the former are 'Creativity and George Herbert Mead' (1990), 'Bergson and the Evolution of Physics' (1969), and 'Bergson and Modern Thought: Towards a Unified Science' (1987). He published the 'Bergson Bibliography' (1974, 1st ed; 1986, 2nd ed) with the Philosophy Documentation Center as well as a third edition-adding several thousand items-for the Presses Universitaires de France (online, Espace Bergson).A folk singer, Prof. Gunter has written many songs along with published poems and short stories.