Violent ethno-nationalist conflicts continue to mar the history of the current century, yet no satisfactory answer to the question of why humans are susceptible to indoctrination by ideologies that lead to inter-group hostility has so far been found. In this volume an international team of leading scientists from many different fields approach this complex issue from a biological perspective, treating indoctrinability as a predisposition that has its roots in humanity's evolutionary past.

The author argues that there are specific turning points in evolution. Structures and behavioral patterns that evolved in the service of discrete functions sometimes allow for unforeseen new developments as a side effect. In retrospect, they have proven to be pre-adaptations, and serve as raw material for natural selection to work upon.

"Love and Hate" was intended to complement Konrad Lorenz's book, "On Aggression," by pointing out our motivations to provide nurturing, and thus to counteract and correct the widespread but one-sided opinion that biologists always present nature as bloody in tooth and claw and intra-specific aggression as the prime mover of evolution. This simplistic image is, nonetheless, still with us, all the more regrettably because it hampers discussion across scholarly disciplines. Eibl-Eibesfeldt argues that leaders in individualized groups are chosen for their pro-social abilities. Those who comfort group members in distress, who are able to intervene in quarrels and to protect group members who are attacked, those who share, those who, in brief, show abilities to nurture, are chosen by the others as leaders, rather than those who use their abilities in competitive ways. Of course, group leaders may need, beyond their pro-social competence, to be gifted as orators, war leaders, or healers. Issues of love and hate are social in origin and hence social in consequence. Life has emerged on this planet in a succession of new forms, from the simplest algae to man--man the one being who reflects upon this creation, who seeks to fashion it himself and who, in the process, may end by destroying it. It would indeed be grotesque if the question of the meaning of life were to be solved in this way.

As the author notes in the preface of this new edition: "I discuss the phylogenetic origin of our behavior and motivations, which provide the basis for our cultural evolution and thus for our humanitarian hopes." In language that is clear and accessible throughout, arguing forcefully for the innate and "preprogrammed" dispositions of behavior in higher vertebrates, including humans, Eibl-Eibesfeldt steers a middle course in discussing the development of cultural and ethical norms while insisting on their matrix of biological origins.

The author argues that there are specific turning points in evolution. Structures and behavioral patterns that evolved in the service of discrete functions sometimes allow for unforeseen new developments as a side effect. In retrospect, they have proven to be pre-adaptations, and serve as raw material for natural selection to work upon. Love and Hate was intended to complement Konrad Lorenz's book, On Aggression, by pointing out our motivations to provide nurturing, and thus to counteract and correct the widespread but one-sided opinion that biologists always present nature as bloody in tooth and claw and intra-specific aggression as the prime mover of evolution. This simplistic image is, nonetheless, still with us, all the more regrettably because it hampers discussion across scholarly disciplines. Eibl-Eibesfeldt argues that leaders in individualized groups are chosen for their pro-social abilities. Those who comfort group members in distress, who are able to intervene in quarrels and to protect group members who are attacked, those who share, those who, in brief, show abilities to nurture, are chosen by the others as leaders, rather than those who use their abilities in competitive ways. Of course, group leaders may need, beyond their pro-social competence, to be gifted as orators, war leaders, or healers. Issues of love and hate are social in origin and hence social in consequence. Life has emerged on this planet in a succession of new forms, from the simplest algae to man-man the one being who reflects upon this creation, who seeks to fashion it himself and who, in the process, may end by destroying it. It would indeed be grotesque if the question of the meaning of life were to be solved in this way. In language that is clear and accessible throughout, arguing forcefully for the innate and "preprogrammed" dispositions of behavior in higher vertebrates, including humans, Eibl-Eibesfeldt steers a middle course in discussing the development of cultural and ethical norms while insisting on their matrix of biological origins.

With the discovery of conditioned reflexes by I. P. Pavlov, the possibilities for experimenting, following the example set by the classical, exact sciences, were made available to the behavioral sciences. Many psychologists hoped that the component parts of behavior had also been found from which the entire, multifaceted cosmos of behavior could then be constructed. An experimentally oriented psychology subsequently developed including the influential school of behaviorism.This first text on human ethology presents itself as a unified work, even though not every area could be treated with equal depth. For example, a branch of ethology has developed in the past decade which places particular emphasis on ecology and population genetics. This field, known as sociobiology, has enriched discussion beyond the boundaries of behavioral biology through its stimulating, and often provocative, theses.After vigorous debates between behaviorists, anthropologists, and sociologists, we have entered a period of exchange of thoughts and a mutual approach, which in many instances has led to cooperative projects of researchers from different disciplines. This work offers a biological point of view for discussion and includes data from the author's cross-cultural work and research from the staff of his institute. It confirms, above all else, the astonishing unity of mankind and paints a basically positive picture of how we are moved by the same passions, jealousies, friendliness, and active curiosity.The need to understand ourselves has never been as great as it is today. An ideologically torn humanity struggles for its survival. Our species, does not know how it should compensate its workers, and it experiments with various economic systems, constitutions, and forms of government. It struggles for freedom and stumbles into newer conflicts. Population growth is apparently completely out of hand, and at the same time many resources are being depleted. We must consider our existence rationally in order to understand it, but certainly not with cold, calculating reason but with the warm feeling of a heart concerned for the welfare of later generations.

With the discovery of conditioned reflexes by I. P. Pavlov, the possibilities for experimenting, following the example set by the classical, exact sciences, were made available to the behavioral sciences. Many psychologists hoped that the component parts of behavior had also been found from which the entire, multifaceted cosmos of behavior could then be constructed. An experimentally oriented psychology subsequently developed including the influential school of behaviorism.

This first text on human ethology presents itself as a unified work, even though not every area could be treated with equal depth. For example, a branch of ethology has developed in the past decade which places particular emphasis on ecology and population genetics. This field, known as sociobiology, has enriched discussion beyond the boundaries of behavioral biology through its stimulating, and often provocative, theses.

After vigorous debates between behaviorists, anthropologists, and sociologists, we have entered a period of exchange of thoughts and a mutual approach, which in many instances has led to cooperative projects of researchers from different disciplines. This work offers a biological point of view for discussion and includes data from the author's cross-cultural work and research from the staff of his institute. It confirms, above all else, the astonishing unity of mankind and paints a basically positive picture of how we are moved by the same passions, jealousies, friendliness, and active curiosity.

The need to understand ourselves has never been as great as it is today. An ideologically torn humanity struggles for its survival. Our species, does not know how it should compensate its workers, and it experiments with various economic systems, constitutions, and forms of government. It struggles for freedom and stumbles into newer conflicts. Population growth is apparently completely out of hand, and at the same time many resources are being depleted. We must consider our existence rationally in order to understand it, but certainly not with cold, calculating reason but with the warm feeling of a heart concerned for the welfare of later generations.

Violent ethno-nationalist conflicts continue to mar the history of the twentieth century; yet no satisfactory answer to the question of why humans are susceptible to indoctrination by ideologies that lead to inter-group hostility has so far been found. In this volume an international team of leading scientists from many different fields approach this complex issue from a biological perspective, treating indoctrinability as a predisposition that has its roots in humanity's evolutionary past.