Swami Chinmayanandaji was a renowned saint. Once, a 'secular' minded journalist, who generally show Hinduism in poor light, vis a vis other religions, asked a question to Swamiji:
Q: Who is the founder of Islam?
A: Prophet Mohammad.
Q: Who is the founder of Christianity?
A: Jesus Christ.
Q: Who is the founder of Hinduism?
Thinking that Swamiji has no answer, the lady journalist proceeded:
There is no founder and hence, Hinduism is not a religion or Dharma at all.
A: Then, Swamiji said:
You are right. Hinduism is not a religion. It is a Science.
She did not understand that.
Swamiji put some more questions to her.
Q: Who is the founder of Physics?
Ans: No one person.
Who is the founder of Chemistry?
Ans: No one person.
Who is the founder of Biology?
Ans: No single person.
Many many persons, from time to time, contributed to the wealth of knowledge of any Science.
Swamiji continued:
Hindu Dharma is a Science, developed over the centuries, contributed by saints and sages for giving right direction to the society.
Islam has only one book -Quran.
Christianity has only one book -Bible.
But for Hinduism, I can take you to a library and show you hundreds of books.
Hence, Hinduism is a scientific religion - called Sanatana Dharma Eternal Dharma.