Then, when she saw me not only answering nothing, but mute and utterly incapable of speech, she gently touched my breast with her hand, and said: ‘There is no danger; these are the symptoms of lethargy, the usual sickness of deluded minds. For awhile he has forgotten himself; he will easily recover his memory, if only he first recognises me. And that he may do so, let me now wipe his eyes that are clouded with a mist of mortal things.

– Boethius

The Consolation of Philosophy