According to the author of this book, a prominent Canadian scientist Hans Cellier, solving many significant issues of general biology and medicine is impossible without approaching a living organism as a complex, highly organized system, and not to a simple sum of its constituent elements. Are there signs common to a wide variety of diseases and therefore inherent in disease per se? Is it possible to identify and formulate the patterns of development of any pathological process? What is the role and mutual influence of disease-causing agents and the "soil" - the organism into which they fall? Does the concept of "intuition" apply in the definition of the process of scientific creativity? What qualities are needed by scientists who discover a problem and researchers who deal with it? This is the range of the main issues raised in this book.