Columbia subject headings:
Ethics, Modern--20th century.
Russell, Bertrand, 1872-1970--Ethics.
Spinoza, Benedictus de, 1632-1677--Influence.
Harvard subject headings:
Ethics, Modern--20th century.
Russell, Bertrand, 1872-1970--Contributions in ethics.
Spinoza, Benedictus de, 1632-1677--Influence.
Princeton subject headings:
Ethics, Modern--20th century.
Russell, Bertrand, 1872-1970--Ethics.
Spinoza, Benedictus de, 1632-1677--Influence.