In these essays Heinz von Foerster discusses some of the fundamental principles that govern how we know the world and how we process the information from which we derive that knowledge. Included are path- breaking articles concerning the principles of computation in neural nets (1967), the definition of self-organizing systems (1960), the nature of cognition (1970), as well as recent expansions on these themes (e.g. "How recursive is communication," 1993). Working with Norbert Wiener, Warren McCullough, and others in the 1960s and 1970s, von Foerster was one of the founders of the science of cybernetics, which has had profound effects both on modern systems theory and on the philosophy of cognition. At the Biological Computer Laboratory at the University of Illinois he produced the first parallel computers and contributed to many other developments in the theory of computation and cognition.

The Bion Experiments on the Origin of Life-first published as Die Bione in 1938 in a limited German edition-represents a cornerstone in Reich's scientific development. This work documents a series of experiments conducted in Oslo in 1936-37 in which Reich applied the formula of tension¿charge¿ discharge¿relaxation, derived from his research on the function of the orgasm, to the microscopic biological world, thereby opening a route to the understanding of the origin of life. This work is divided into two parts: the first, a detailed report on the experiments; the second, Reich's conclusions and an exposition of his research method.The Bion Experiments provides a unique insight into Reich's scientific method, and makes available the experimental material essential to understanding his later work with cancer and orgone biophysics.