The difference between God and the devil is in nothing except in unselfishness and selfishness. The devil knows as much as God, is as powerful as God; only he has no holiness that makes him a devil. Apply the same idea to the modern world: excess of knowledge and power, without holiness, makes human beings devils.
Swami VivekanandaHe who has conquered the internal nature controls the whole universe; it becomes his servant.
Swami VivekanandaNeither numbers nor powers nor wealth nor learning nor eloquence nor anything else will prevail, but purity, living the life, in one word, anubhuti, realisation. Let there be a dozen such lion-souls in each country, lions who have broken their own bonds, who have touched the Infinite, whose whole soul is gone to Brahman, who care neither for wealth nor power nor fame, and these will be enough to shake the world.
Swami VivekanandaThis intelligence itself is modified into what we call egoism, and this intelligence is the cause of all the powers in the body. It covers the whole ground, sub-consciousness, consciousness, and super-consciousness.
Swami Vivekananda