No man should blindly follow his ancestors and forefathers.

Another new principle revealed by Bahá’u’lláh is the injunction to investigate truth — that is to say, no man should blindly follow his ancestors and forefathers. Nay, each must see with his own eyes, hear with his own ears and investigate the truth himself in order that he may follow the truth instead of blind acquiescence and imitation of ancestral beliefs.

- Abdul Baha

http://reference.bahai.org/en/t/ab/PUP/pup-134.html