Gulistān, sometimes spelled Golestan, is a landmark of Persian literature, perhaps its single most influential work of prose. Written in 1258 CE, it is one of two major works of the Persian poet Sa'di, considered one of the greatest medieval Persian poets. It is also one of his most popular books, and has proved deeply influential in the West as well as the East. The Gulistan is a collection of poems and stories, just as a rose-garden is a collection of flowers. It is widely quoted as a source of wisdom. The well-known aphorism still frequently repeated in the western world, about being sad because one has no shoes until one meets the man who has no feet "whereupon I thanked Providence for its bounty to myself" is from the Gulistan.

Persian, also known by its endonym Farsi or Parsi, is a Western Iranian language belonging to the Iranian branch of the Indo-Iranian subdivision of the Indo-European languages. Persian is a pluricentric language predominantly spoken and used officially within Iran, Afghanistan, and Tajikistan in three mutually intelligible standard varieties, respectively Iranian Persian, Dari Persian, and Tajiki Persian. It is also spoken natively in the Tajik variety by a significant population within Uzbekistan, as well as within other regions with a Persianate history in the cultural sphere of Greater Iran. It is written officially within Iran and Afghanistan in the Persian alphabet, a derivative of the Arabic script, and within Tajikistan in the Tajik alphabet, a derivative of the Cyrillic script.