The Gupta period is called the Golden Age of Sanskrit literature. Chandragupta II is credited with maintaining Nav-Ratna (Nine luminaries) at his court. Kalidasa and Amarasimha adorned his court. Kalidasa was the greatest and most famous poet of this period. He wrote Abhijnana Shakuntalam, Raghuvansham, Meghaduta and Kumar Sambhava. Amarsimha wrote Amarakosa, a Sanskrit dictionaiy. Panini was a great grammarian. Ashtadhyayi, the greatest work on Sanskrit grammar was written by Panini during this period.