Complex sentence: His best known work is "The Right and the Good" (1930), and he is perhaps best known for developing a pluralist, deontological form of intuitionist ethics in response to G.E. Moore's intuitionism.
Split into simpler sentences: His best known work is "The Right and the Good" (1930). He is perhaps best known for developing a pluralist form of deontological ethics in response to G.E. Moore's intuitionism.