The Rubáiyát of Omar Khayyám is a collection of poems attributed to the 11th-century Persian poet Omar Khayyám. The poems are quatrains, each consisting of four lines of iambic tetrameter, and are known for their philosophical and hedonistic themes. Khayyám's poems explore the nature of life and death, the meaning of existence, and the futility of human endeavors. He often writes about the beauty of the natural world, the pleasures of wine and love, and the importance of living in the moment. The Rubáiyát has been translated into many languages and has been the subject of much critical and scholarly attention. It is considered one of the great works of world literature.