Clement of Alexandria wrote in 2nd century :
Pythagoras was hearer of Brahmins.
Barbarians { Indians , Egyptians and non greeks } contribute the maximum part of Greek philosophy and almost every art is born from them only.

Apuleius of 2nd century wrote :
Brahmins were the teacher of Pythagoras who taught him the most part of Anatomy , Philosophy , souls etc.

Apollonius of Tyana and Philostratus said in 1st-2nd century
Pythagorus moved to Bharat in order to fetch knowledge from Indian sages called Brahmins.

1. In around 237 BCE there was first Tamil invasion which brought some civilized hinduism to Lanka. Sadly they destroyed the buddhism at that time.😔

2. Tripitaka was started being written in 2nd century BCE as far as 150 BCE and was finally complied during the time of Alu VIhara council.

3. Whole Tripitaka was written in Lanka and was preserved by the best ever Buddhist lineage which started from one of the Buddha's principal disciple Upali & continued till Sivatissa ( hence no interpolations ).

4. Tripitaka was earlier passed on orally , which was started being first compiled during the reign of Gamani as per Mahavamsa.

5. Vessagiri inscription of 161-137 BCE consist of that much developed brahmi in which even Sanskrit could be written. ( Means Sanskrit is more ancient than Canon ).