Shakespeare is thought to have written at least 37 plays. In the First Folio edition of his plays; published by two of his colleagues in 1623, only seven years after he died, 35 plays are listed. 'Pericles' and 'The Two Noble Kinsmen', which are absent from the list, are generally agreed to be by Shakespeare. A lost play, 'Cardenio', is sometimes ascribed to him and he also contributed some scenes to 'Sir Thomas More'.