Kālidāsa
The most popular theory is that Kalidasa flourished during the reign of Chandragupta II, and therefore lived around 4th-5th century CE. Several Western scholars have supported this theory, since the days of William Jones and A. B. Keith. Many Indian scholars, such as Vasudev Vishnu Mirashi and Ram Gupta, also place Kalidasa in this period. According to this theory, his career might have extended to the reign of Kumaragupta I (r. 414 – 455 CE), and possibly, to that of Skandagupta (r. 455 – 467 CE).
Buddhadasa
Phra Dharmakosacarya (Nguam Indapañño) (; ), also known as Buddhadasa Bhikkhu (; , May 27, 1906 – May 25, 1993) was a famous and influential Thai ascetic-philosopher of the 20th century. Known as an innovative reinterpreter of Buddhist doctrine and Thai folk beliefs, Buddhadasa fostered a reformation in conventional religious perceptions in his home country, Thailand, as well as abroad. Buddhadasa developed a personal view that those who have penetrated the essential nature of religions consider "all religions to be inwardly the same", while those who have the highest understanding of "dhamma" feel "there is no religion".