One man who had many new ideas was a poet named Johann Gottfried von Herder. Herder liked the plays of Shakespeare (which he had learned in German) as well as folk poetry. These ideas were exciting for Goethe, and he helped Herder to collect folk poetry. Both men believed that poetry should always come from the heart, and that it should be based on the poet’s experiences instead of on an old-fashioned idea of what a good poem should be. Some of Goethe's best known poems were written during this time, like "Heidenröslein", "Der König in Thule", and "Erlkönig."