With sincerity and earnestness one can realize God through all religions. The Vaishnavas 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.
RamakrishnaImagine a limitless expanse of water: above and below, before and behind, right and left, everywhere there is water. In that water is placed a jar filled with water. There is water inside the jar and water outside, but the jar is still there. The 'I' is the jar.
RamakrishnaMany people think they cannot have knowledge or understanding of God without reading books. But hearing is better than reading, and seeing is better than hearing. Hearing about Benares is different from reading about it; but seeing Benares is different from either hearing or reading.
Ramakrishna