Jacques Monod, the Nobel Prize winning biochemist, allies himself, in the title of this admirable treatise, to the atomist Democritus, who held that the whole universe is but the fruit of two qualities, chance and necessity. Interpreting the laws of natural selection along purely naturalistic lines, he succeeds in presenting a powerful case that takes into account the ethical, political and philosophical undercurrents of the synthesis in modern biology. Above all, he stresses that science must commit itself to the postulate of objectivity by casting aside delusive ideological and moral props, even though he enjoins, at the same time, that the postulate of objectivity itself is a moral injunction. He launches a bitter polemic against metaphysical and scientific vitalisms, dismissing them as obscurantist, as well as the animist projection in history and evolution, as represented by Teilhard de Chardin and, especially, the Marxist doctrine of dialectical materialism. He refutes teleological explanations of nature as being contrary to the postulate of objectivity, drawing attention to self-constructing proteins as teleonomic agents, followed by an explanation of the role of nucleic acids, reproduction and invariance. This leads him to dismiss Judaeo-Christian religiosity, which accords man a significant role as being created in God's image, as a nauseating and false pietism and he even goes so far as to recommend eugenic reform. Writing with great clarity and flair, and often in a forceful and idiosyncratic idiom, he puts forward a compelling case, though some knowledge of modern biology is presumed on the part of the reader. He also offers, in a truly philosophical fashion, fascinating insights and speculations on broader issues such as language, perception, the origin and nature of existence, as they are framed within his system. Generally, however, some experts and readers will contest some of his claims, such as his regarding proteins as primary, contrary to the common assumption that proteins are merely secondary to the genome. Nevertheless, a challenging, sophisticated and pugnacious treatise, which excels the work of the better-known biological writers in the English-speaking world, such as Dawkins and Gould.