Moral philosophy is not confined to the evaluation and criticism of conduct; it is concerned with good and evil wherever they may be found. In short, moral philosophers are concerned with ethical situations; an ethical situation is a complex state of affairs in which good or evil is present. It follows that every ethical situation contains at least one sentient being.
(L. Susan Stebbing, Men and Moral Principles, L. T. Hobhouse Memorial Trust Lectures No. 13 [London: Humphrey Milford, Oxford University Press, 1944], 12, reprinted in Hobhouse Memorial Lectures 1941-1950 [London: Geoffrey Cumberlege, Oxford University Press, 1952] [lecture delivered on 12 May 1943])
