(Following is an extract from Sri Ramakrishna Biography when he met the members of Keshav Chandra Sen's Brahma Samaj)
MASTER: "With sincerity and earnestness one can realize God through all religions. The Vaishnava will realize God, and so will the Saktas, the Vedantists, and the Brahmos. The Mussalmans and Christians will realize Him too. All will certainly realize God if they are earnest and sincere.
"Some people indulge in quarrels, saying, 'One cannot attain anything unless one worships our Krishna', or, 'Nothing can be gained without the worship of Kali, our Divine Mother', or, 'One cannot be saved without accepting the Christian religion.' This is pure dogmatism. The dogmatist says, 'My religion alone is true, and the religions of others are false.' This is a bad attitude. God can be reached by different paths.
"Further, some say that God has form and is not formless. Thus they start quarrelling. A Vaishnava quarrels with a Vedantist.
"One can rightly speak of God only after one has seen Him. He who has seen God knows really and truly that God has form and that He is formless as well. He has many other aspects that cannot be described.
"Once some blind men chanced to come near an animal that someone told them was an elephant. They were asked what the elephant was like. The blind men began to feel its body. One of them said the elephant was like a pillar; he had touched only its leg. Another said it was like a winnowing-fan; he had touched only its ear. In this way the others, having touched its tail or belly, gave their different versions of the elephant. Just so, a man who has seen only one aspect of God limits God to that alone. It is his conviction that God cannot be anything else.