Tagore's poetry is very varied and covers many styles. He drew inspiration from 15th and 16th century poets and from ancient writers like Vasa. Bengal's Baul folk singers were also influenced by his style of poetry. He wrote many poems when he was at Shelidah managing his family's estates. Many of his poems have a lyrical quality. These poems tell about the "man within the heart" and the "living God within". Over the next 70 years, he repeatedly revised his style of writing poetry. In 1930s, he wrote many experimental works of poetry, and also used modernism and realism in his works.