A man may be born a jackass; but it is his business if he makes himself a double one. – Martin H. Fischer (1879–1962)

We grow with years more fragile in body, but morally stouter, and can throw off the chill of a bad conscience almost at once. – Logan Pearsall Smith, “Age and Death,” Afterthoughts, 1931

Men are not punished for their sins, but by them. – Elbert Hubbard, A Thousand and One Epigrams, 1911

If moral behavior were simply following rules, we could program a computer to be moral. – Samuel P. Ginder