What then do I mean by the ideal of a universal religion? I do not mean any one universal philosophy, or any one universal mythology, or any one universal ritual held alike by all; for I know that this world must go on working, wheel within wheel, this intricate mass of machinery, most complex, most wonderful. What can we do then? We can make it run smoothly, we can lessen the friction, we can grease the wheels, as it were. How? By recognizing the natural necessity of variation. Just as we have recognized unity by our very nature, so we must also recognize variation. We must learn that truth may be expressed in a hundred thousand ways, and that each of these ways is true as far as it goes. We must learn that the same thing can be viewed from a hundred different standpoints and yet be the same thing. Take for instance the sun. Suppose a man standing on the earth looks at the sun when it rises in the morning; he sees a big ball. Suppose he starts on a journey towards the sun and takes a camera with him, taking photographs at every stage of his journey, until he reaches the sun. The photographs of each stage will be seen to be different from those of the other stages; in fact, when he gets back, he brings with him so many photographs of so many different suns, as it would appear; and yet we know that the same sun was photographed by the man at the different stages of his progress. Even so is it with the Lord. Through high philosophy or low, through the most exalted mythology or the grossest, through the most refined ritualism or arrant fetishism, every sect, every soul, every nation, every religion, consciously or unconsciously, is struggling upward, towards God; every vision of truth that man has is a vision of Him and of none else. Suppose we all go with vessels in our hands to fetch water from a lake. One has a cup, another a jar, another a bucket, and so forth, and we all fill our vessels. The water in each case naturally takes the form of the vessel carried by each of us. He who brought the cup has the water in the form of a cup; he who brought the jar—his water is in the shape of a jar, and so forth; but, in every case water, and nothing but water, is in the vessel. So it is in the case of religion; our minds are like these vessels, and each one of us is trying to arrive at the realization of God. God is like that water filling these different vessels, and in each vessel the vision of God comes in the form of the vessel. Yet He is One. He is God in every case. This is the only recognition of universality that we can get. . . .
I have also my little plan. I do not know whether it will work or not, and I want to present it to you for discussion. What is my plan? In the first place I would ask mankind to recognize this maxim, “Do not destroy.” Iconoclastic reformers do no good to the world. Break not, pull not anything down, but build. Help, if you can; if you cannot, fold your hands and stand by and see things go on. Do not injure, if you cannot render help. Say not a word against any man’s convictions so far as they are sincere. Secondly, take man where he stands, and from there give him a lift. If it be true that God is the center of all religions, and that each of us is moving towards Him along one of these radii, then it is certain that all of us must reach that center. And at the center, where all the radii meet, all our differences will cease; but until we reach there, differences there must be. All these radii converge to the same center. One, according to his nature, travels along one of these lines, and another, along another; and if we all push onward along our own lines, we shall surely come to the center, because, “All roads lead to Rome.” Each of us is naturally growing and developing according to one’s own nature; each will in time come to know the highest truth for, after all, men must teach themselves. What can you and I do? Do you think you can teach even a child? You cannot. The child teaches himself. Your duty is to afford opportunities and to remove obstacles. A plant grows. Do you make the plant grow? Your duty is to put a hedge round it and see that no animal eats up the plant, and there your duty ends. The plant grows of itself. So it is in regard to the spiritual growth of every man. None can teach you; none can make a spiritual man of you. You have to teach yourself; your growth must come from inside.
– Swami Vivekananda
“The Ideal of a Universal Religion”