G. E. Moore,
Ethics — Chapter I
(1912)
“ What, after all, is it that we mean to say of an action when we say that it is right or ought to be done? And what is it that we mean to say of a state of things when we say that it is good or bad? Can we discover any general characteristic, which belongs in common to absolutely all right actions, no matter how different they may be in other respects? ”
