“It is great sin to swear unto a sin. But greater sin to keep a sinful oath. Who can be bound by any solemn vow to do a murderous deed, to rob a man, to force a spotless virgin’s chastity, to reave the orphan of his patrimony, to wring the widow from her custom’d right, and have no other reason for this wrong but that he was bound by a solemn oath?” – William Shakespeare, King Henry VI – Second Part 5.1