The sky lovingly smiles on the earth and her children.
The argument of this book is that we, and all other animals, are machines created by our genes. Like successful Chicago gangsters, our genes have survived, in some cases for millions of years, in a highly competitive world. This entitles us to expect certain qualities in our genes. I shall argue that a predominant quality to be expected in a successful gene is ruthless selfishness. This gene selfishness will usually give rise to selfishness in individual behavior. However, as we shall see, there are special circumstances in which a gene can achieve its own selfish goals best by fostering a limited form of altruism at the level of individual animals. 'Special' and 'limited' are important words in the last sentence. Much as we might wish to believe otherwise, universal love and the welfare of the species as a whole are concepts that simply do not make evolutionary sense.
If men lived like men indeed, their houses would be temples -- temples which we should hardly dare to injure, and in which it would make us holy to be permitted to live; and there must be a strange dissolution of natural affection, a strange unthankfulness for all that homes have given and parents taught, a strange consciousness that we have been unfaithful to our fathers honor, or that our own lives are not such as would make our dwellings sacred to our children, when each man would fain build to himself, and build for the little revolution of his own life only.