Swami Vivekananda's life is a lesson against intolerance

Every religion has a soul behind it, and that soul may differ from the soul of another religion; but are they contradictory? I believe that they are not contradictory; they are supplementary. Each religion, as it were, takes up one part of the great universal truth, and spend its whole force in embodying and typifying that part of the great truth.

Our worship is unbounded and free. They are all manifestations of the same Infinite God. They are all pure and unselfish; they struggled and gave up their lives for us, poor human beings. Each and all suffer vicarious atonement for every one of us, and also for all that are to come hereafter.

I am proud to belong to a religion which has taught the world both tolerance and universal acceptance. We believe not only in universal toleration but we accept all religions as true. (September 1, 1893, World Parliament of Religions at Chicago)

Unity and variety is the plan of nature, and the Hindu has recognised it.
Every religion is only an evolution out of the material man, a God and the same God is the inspirer of all of them.

Sun shines upon the followers of Krishna or Christ, saints or sinners, alike; which will not be the Brahman or Buddhist, Christian or Mohammedan, but the sum total of all these, and still have infinite space for development; which in its Catholicity will embrace in its infinite arms and find a place for every human being [...] It will be a religion which will have no place for persecution or intolerance in its polity, which will recognise a divinity in every man or woman, and whose whole scope, whose whole force, will be centered in aiding humanity to realise its divine nature.

By the study of different religions, we find that in essence, they are one. I studied the Christian religion, the Mohammedan, the Buddhistic, and others, and what was my surprise to find that the same foundation principles taught by my religion were also taught by all religions. We see, therefore, that if one religion is true, all others must be true.

See God in every person ? working through all hands, walking through all feet, and eating through every mouth. In every being He lives, through all minds, He thinks.

People of the West should learn one thing from India and that is toleration. All the religions are good since the essentials are the same.