Joyce Cary wrote two trilogies, or triptychs as he later preferred to call them. The first comprises: Herself Surprised, To Be a Pilgrim and The Horse's Mouth. The Horse's Mouth is a portrait of an artistic temperament. Its principal character, Gulley Gimson, is an impoverished painter who scorns conventional good behaviour. He may be a bad citizen, but he is a good artist, so wholly preoccupied with his art that he is willing to endure any privation for its sake. Such is his contempt for orthodox mores, he takes a delight in cocking a snook at them. For him there is only one morality: to be a painter. 'Mr Joyce Cary is an important and exciting writer; there's no doubt about that. To use Tennyson's phrase, he is a Lord of Language ... if you like rich writing full of gusto and accurate original character drawing, you will get it from The Horse's Mouth.' John Betjeman, Daily Herald