On the knowledge of good and evil
New York 1955. 299 S.
The problem of choice
Boston (Mass.) 1941. 416 S.
The principles of conduct
New York 1948. 420 S.
The claim of morality
London 1952. 333 S.
Ethics and moral tolerance
New York 1934. 323 S.
The centrality of normative ethical theory
Frankfurt am Main 1999. 228 S.
Strategies of ethics
Boston (Mass.) 1978. 273 S.
The right and the good
Oxford 1967. 176 S.
Ethical values in the age of science
London 1969. 317 S.
The philosophy of loyalty
New York 1908. 409 S.