Seneca · On our blindness and its cure
Letters 50.2
You know Harpasté, my wife’s female clown; she has remained in my house, a burden incurred from a legacy. I particularly disapprove of these freaks; whenever I wish to enjoy the quips of a clown, I am not compelled to hunt far; I can laugh at myself. Now this clown suddenly became blind. The story sounds incredible, but I assure you that it is true: she does not know that she is blind. She keeps asking her attendant to change her quarters; she says that her apartments are too dark.
Seneca, Letters to Lucilius 50.2, translated by Richard Mott Gummere