This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book examines some moral approaches to ethical veganism. Historically, various forms of utilitarianism and deontological ethics have been used to frame the discussion and to defend veganism and vegetarianism. The book discusses some compelling evidence, including nutritional and evolutionary evidence, that a raw vegan diet is humans’ ideal diet. Eating directly the food that nature produces is the best possible diet for human beings. The book proposes a valiant solution to the environmental issues in the way of moral education and environmental awareness and a qualified ban on animal-based products. It explains the social and health implications of raising children on a raw vegan diet. The book shows that the human diet from the point of view of nutrition science and evolution.