The second great idea which the world is waiting to receive from our Upanishads is the solidarity of this universe. The old lines of demarcation and differentiation are vanishing rapidly. Electricity and steam-power are placing the different parts of the world in intercommunication with each other, and, as a result, we Hindus no longer say that every country beyond our own land is peopled with demons and hobgoblins, nor do the people of Christian countries say that India is only peopled by cannibals and savages. When we go out of our country, we find the same brother-man, with the same strong hand to help, with the same lips to say godspeed; and sometimes they are better than in the country in which we are born. When they come here, they find the same brotherhood, the same cheer, the same godspeed. Our Upanishads say that the cause of all misery is ignorance; and that is perfectly true when applied to every state of life, either social or spiritual. It is ignorance that makes us hate each other, it is through ignorance that we do not know and do not love each other. As soon as we come to know each other, love comes, must come, for are we not ones. Thus we find solidarity coming in spite of itself.
- Swami Vivekananda
The Complete Works of Swami Vivekananda/Volume 3/Lectures from Colombo to Almora/Vedanta in its Application to Indian Life