" We have always heard it preached, „Love one another“. What for? That doctrine was preached, but the explanation is here. Why should I love every one? Because they and I are one. Why should I love my brother? Because he and I are one. There is this oneness; this solidarity of the whole universe. From the lowest worm that crawls under our feet to the highest beings that ever lived – all have various bodies, but are the one Soul. "
― Vivekananda , Practical Vedanta