Abstract

Not a text, but a thoughtful and provocative essay for those who have already done their groundwork in ethical theory, this book is especially interesting because it introduces broadly relevant views of otherwise unfamiliar contemporary European philosophers as taken from their publications in the 1950's and 60's. van Melsen deals with the often opposing concepts of "man as nature," the object of science, and "man as freedom," the subject who carries out the research. An especially interesting thesis is that of the correspondence of views of man, stages in the development of science and natural law theory, and ethical theories and aspirations. As an example, van Melsen shows that the relative weight of intention and of results in determining the ethical value of an act, varies in static versus dynamic social orders. In discussing the changes in meaning of "natural law" he relates this to the problem of human sin and freedom, in the form given it by Thomas Aquinas: evil sways man only by its ability to pass as goodness. In modern scientific terms, we are not able to recognize evil except as we can cope with the statistical probabilities of its horrible consequences. The author takes up the relation of "is" and "should," quite independently of the tradition of Hume in which the issue is frequently presented to American students. In both science and morals, "should" is always richer than "is." Although norms can never be entirely divorced from what exists in nature, nature can offer a norm only insofar as it produces something that man recognizes as valuable. van Melsen would opt for the reality of ideals, limit concepts, which constitute the "nature" of ethical good or "human nature." On this view science is doubly relevant to ethics: the scientist should appreciate his work as carrying out the ethical command to distinguish evil from good by enlarging our knowledge of consequences, and further as embodying his love for fellowmen.--M. B. M.