This line I recall clearly from William Shakespeare’s Macbeth. In multiple parts of the play, the protagonist appears to regret his wrongdoings, but I don’t believe he feels any remorse.

William Shakespeare’s Macbeth is a timeless tragedy that explores the destructive nature of ambition, power, and guilt. The play follows the rise and fall of Macbeth, a once-valiant Scottish ...

Lady Macbeth's madness and death - the isolation and the guilt have driven her mad. Macbeth realises his life no longer has any meaning and calmly faces his own death at the hands of Macduff.

As the guilt-ridden Macbeth descends into hallucinatory madness ... who views her husband’s hesitations and remorse as mere weakness. Indeed, “Macbeth” is a big opera for chorus.