Swami Chinmayanandaji was a renowned saint. Once, a 'Secular' minded journalist, who generally used to 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 to her question, the lady journalist proceeded like a sure shot winner, proclaiming ,"There is no founder and hence, Hinduism is not a religion or Dharma at all."

Swamiji heard her above statement, then said smilingly, "You are right.
Hinduism is not a religion. It is a Science."
She simply had not expected such an answer and she failed to understand the real meaning of that reply.

Swamiji put some more questions to her and requested for an answer to his questions.
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 & show you hundreds of books. Hence Hinduism is a scientific religion - called Sanatana dharma - eternal dharma!!"