The Pahlavi script is an ancient writing system used primarily in the Sasanian Empire from the 3rd to the 7th centuries CE. It evolved from the Aramaic script and was used to write the Middle Persian language. The script consists of a series of characters that represent consonants, with vowels often omitted, making it somewhat challenging to read. Pahlavi script is notable for its use in religious and administrative texts, including the Avesta, the sacred scriptures of Zoroastrianism. Over time, it became less common as the Islamic conquest of Persia introduced the Arabic script, leading to the decline of Pahlavi in favor of new writing systems.