1999

May, Simon (1999) Nietzsche's ethics and his war on 'morality'. Oxford, UK: Oxford University Press. ISBN 9780198238461.

2009

May, Simon (2009) Nihilism and the free self. In: Gemes, Ken and May, Simon (eds.) Nietzsche on Freedom and Autonomy. Oxford, UK: Oxford University Press. ISBN 9780199231560.

2011

May, Simon (2011) Love: a history. New Haven, USA: Yale University Press. ISBN 9780300118308.

May, Simon, ed. (2011) Nietzsche's 'On the Genealogy of Morality': a critical guide. Cambridge Critical Guides. Cambridge, UK: Cambridge University Press. ISBN 9781107437234.

May, Simon (2011) Why Nietzsche is still in the morality game. In: May, Simon (ed.) Nietzsche's 'On the Genealogy of Morality': a critical guide. Cambridge Critical Guides. Cambridge, UK: Cambridge University Press. ISBN 9781107437234.