"Dr. R. Arulappa, the former Archbishop of Madras, is one such facile scholar – and yet he has made some unusual contributions to the study of Tamil history. In his book Punitha Thomayar – where he tries to show that Tiruvalluvar’s Kural is a Christian work – he mentions the finding of yantra stones in ancient foundations on all the sites in Madras associated with St. Thomas. He does not expand on these momentous discoveries or say where the stones are today, and it is not clear why he refers to them, but it is certainly true that the Agama Shastra requires the placing of such stones beneath the foundations of new temples before their construction begins."