Book excerpt: The author discusses the cell and cellular formation and development; stimulus and perception and how these relate to the particular biological entity and its environment; the problems of biological ranking; and the mechanistic theory of evolution, which he considers an oversimplification of the evolutionary process. He closes with a discussion of two tendencies in modern biology: the attempt to formulate universal laws at a time when there are too many unanswered questions within the field; and the attempt to relate biological discoveries to a framework of ethics and behavior problems.--