Joel J. Kupperman 
Foundations of Morality [PDF ebook] 

Originally published in 1983, this book maintains that the content and character of morality can be understood if it is regarded as a useful societal tool, whose central purposes include the prevention of harm and promotion of security for members of society. At the foundation is the general superiority of policies and attitudes that have good consequences. The book argues that ethics is 'cognitive’ and explores the kinds of ethical knowledge and the ways in which ethical claims can be challenged and justified.