A highly readable, frequently absorbing book that should help to dispel the bewhiskered notion that scientists as such have no concern with ethical values, and that even if they did, science has nothing to do with ethics. The author, Professor of Mathematical Biology at the University of Chicago, considers the scientific outlook as it affects the three main streams of human thought and aspiration. In the first of these, communication, the subject of semantics, is lucidly described and analyzed as the scientific tool whereby language and logic can be used constructively toward promoting a genuine rather than a superficial understanding among people. The second, orientation, considers metaphysics, the personal framework of purpose through which we look at the world about us. In the third, the author offers science's contribution to the achievement of a workable system of values, or ethics. A fine book for the mature, general reader, with special emphasis for the mature, general reader, with special emphasis for the scientifically-minded.