In her life, sir, she have never lied. There are them that cannot sing, and them that cannot weep – my wife cannot lie. I have paid much to learn it, sir.

– Arthur Miller

The Crucible, Act 3. John Proctor says this to Danforth about his wife Elizabeth before she is brought into the court to testify. His assurance to the court is ironic, because when Elizabeth is called she lies to protect John’s name and reputation.