The Basis of Morality by Part 3 Chapter 2 Page 17

conscientia spuria (false conscience), which is often confounded with the true. The regret and anxiety which many a man feels for what he has done is frequently, at bottom, nothing but fear of the possible consequences. Not a few people, if they break external, voluntary, and even absurd rules, suffer from painful searchings of heart, exactly similar to those inflicted by the real conscience. Thus, for instance, a bigoted Jew, if on Saturday he should smoke a pipe at home, becomes really oppressed with the sense of having disobeyed the command in Exodus xxxv.

3: “Ye shall kindle no fire throughout your habitations upon the Sabbath day.” How often it happens that a nobleman or officer is the victim of self-reproach, because on some occasion or other he has not properly complied with that fools' codex,