Simon was called Peter (meaning “rock”) by Jesus. Peter was a man of the earth – a fisherman, impulsive, not an intellectual – he put his whole self into his work. By his own admission he was “a sinful man.”
Peter was like this sculpture: made of clay dug from the earth, then tried through fire to become “a rock.”
This not quite finished sketch is of a terra cotta (Italian: “baked earth”) bust by Alessandro Algardi.