And herein is the explanation of the most remarkable phenomenon that is only witnessed here — all the various sects, apparently hopelessly contradictory, yet living in such harmony. You may be a dualist, and I may be a monist. You may believe that you are the eternal servant of God, and I may declare that I am one with God Himself; yet both of us are good Hindus. How is that possible? Read then एकं सद्विप्रा बहुधा वदन्ति — "That which exists is One; sages call It by various names." Above all others, my countrymen, this is the one grand truth that we have to teach to the world.
- Swami Vivekananda
The Complete Works of Swami Vivekananda/Volume 3/Lectures from Colombo to Almora/First Public Lecture in the East (Colombo)