Seek ye first the kingdom of God, and everything shall be added unto you. This is the one great duty, this is renunciation. Live for an ideal, and leave no place in the mind for anything else. Let us put forth all our energies to acquire that which never fails-our spiritual perfection. If we have true yearning for realization, we must struggle, and through struggle growth will come. We shall make mistakes, but they may be angels unawares.
Swami VivekanandaThe 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 VivekanandaThis is a world of good and evil. Wherever there is good, evil follows, but beyond and behind all these manifestations, all these contradictions, the Vedanta finds out that Unity. It says, "Give up what is evil and give up what is good." What remains then? Behind good and evil stands something which is yours, the real you, beyond every evil, and beyond every good too, and it is that which is manifesting itself as good and bad. Know that first, and then and then alone you will be a true optimist, and not before; for then you will be able to control everything.
Swami VivekanandaHold to the idea, "I am not the mind, I see that I am thinking, I am watching my mind act," and each day the identification of yourself with thoughts and feelings will grow less, until at last you can entirely separate yourself from the mind and actually know it to be apart from yourself.
Swami Vivekananda