If goodness has causes, it is not goodness; if it has effects, a reward, it is not goodness either. So goodness is outside the chain of cause and effect.
Leo Tolstoy (2016). “The Complete Works of Leo Tolstoy: Novels, Short Stories, Plays, Memoirs, Letters & Essays on Art, Religion and Politics: Anna Karenina, War and Peace, Resurrection, The Death of Ivan Ilych, A Confession, The Cossacks, Correspondences with Gandhi, The Kreutzer Sonata, Fables and Stories for Childrenand Many More”, p.1830, e-artnow