The secret of karma yoga which is to perform actions without any fruitive desires is taught by Lord Krishna in the Bhagavad-Gita.
Swami VivekanandaSome imaginations help to break the bondage of the rest. The whole universe is imagination, but one set of imaginations will cure another set. Those that tell us that there is sin and sorrow and death in the world are terrible. But the other set - thou art holy, there is God, there is no pain - these are good, and help to break the bondage of the others. The highest imagination that can break all the links of the chain is that of the Personal God.
Swami VivekanandaYou are incarnations of God, all of you. You are incarnations of the Almighty, Omnipresent, Divine Principle. You may laugh at me now, but the time will come when you will understand. You must. Nobody will be left behind.
Swami VivekanandaOur minds are forced to become fixed upon different things by an attraction in them which we cannot resist. To control the mind, to place it just where we want it, requires special training. It cannot be done in any other way. In the study of religion the control of the mind is absolutely necessary. We have to turn the mind back upon itself in this study.
Swami Vivekananda