Alexander Sergeevitch Pushkin was a Russian poet, playwright, and novelist who is considered one of the greatest Russian literary figures. He is known for his contributions to Russian literature, particularly in the development of modern Russian language and literary style. Pushkin's works often explored themes of love, politics, and Russian history, and he is celebrated for his lyrical poetry and influential prose. His most famous works include the novel in verse "Eugene Onegin" and the play "Boris Godunov." Pushkin's impact on Russian literature and culture is profound, and he is often referred to as the "father of Russian literature."