 Shakespeare calls his young man "sweet boy" (108, 5) and alludes occasionally to "rosie lips and cheeks" (116, 9), but is otherwise restrained and abstract.Although Petrarch is accredited with perfection of the sonnet, Shakespeare still made changes in sonnet form and composition 200 years after Petrarch's death.While Petrarch's sonnets focused mainly on one hub, Shakespeare developed many subjects within his themes such as insomnia, slave of love, blame, dishonesty, and sickness.