From Notes Of Class Talks And Lectures of Volume 6 of The Complete Works of Swami Vivekananda
One cannot divide the rights of the universe. To talk of “right” implies limitation. It is not “right” but “responsibility”. Each is responsible for the evil anywhere in the world. No one can separate himself from his brother. All that unites with the universal is virtue; all that separates is sin. You are a part of the Infinite. This is your nature. Hence you are your brother’s keeper.
The first end of life is knowledge; the second end of life is happiness. Knowledge and happiness lead to freedom. But not one can attain liberty until every being (ant or dog) has liberty. Not one can be happy until all are happy. When you hurt anyone you hurt yourself, for you and your brother are one. He is indeed a Yogi who sees himself in the whole universe and the whole universe in himself. Self-sacrifice, not self-assertion, is the law of the highest universe. The world is so evil because Jesus’ teaching, “Resist not evil”, has never been tried. Selflessness alone will solve the problem. Religion comes with intense self-sacrifice. Desire nothing for yourself. Do all for others. This is to live and move and have your being in God.