"The answer to this is - first, that love and hate are not mutually antagonistic but mutually complementary; that love connotes hate, hate of the thing that denies or destroys or threatens the thing beloved: that love of good connotes hate of evil, love of truth hate of falsehood, love of freedom hate of oppression; that hate may be as pure and good a thing as love, just as love may be as impure and evil a thing as hate; that hate is no more ineffective and barren than love, both being as necessary to moral sanity and growth as sun and storm are to physical life and growth."

The Sovereign People (1916) - Pádraig Mac Piarais (Patrick Pearse)