Thesis (Ph.D.)--Boston University / The purpose of this dissertation is to expound and evaluate the natural theology of Gerald Heard in relation to the philosophy of Henri Bergson, and to determine the reason for the relative neglect of Heard's thought in theological and philosophical circles. Gerald Heard is a contemporary thinker who has written widely on the relations among science, philosophy and religion. He has not, however, gained the recognition which the range and number of his books might lead one to expect. The procedure consists in (1) a characterization of the basic philosophy of Henri Bergson as a point of reference for consideration of Heard, (2) a systematic analysis of Heard's thought, noting similarities and differences with regard to Bergson, (3) an evaluation of Heard's thought, and conclusions. [TRUNCATED]