Advaita is the only system that gives us complete control over ourselves, takes off all dependence and its associated superstitions, thus making us brave to suffer, brave to do, and in the long run, attain to absolute freedom.
Swami VivekanandaMeditative state is the highest state of existence. So long as there is desire, no real happiness can come. It is only the contemplative, witness-like study of objects that brings to us real enjoyment and happiness. The animal has its happiness in the senses, the man in his intellect, and the god in spiritual contemplation. It is only to the soul that has attained to this contemplative state that the world really becomes beautiful. To him who desires nothing, and does not mix himself up with them, the manifold changes of nature are one panorama of beauty and sublimity.
Swami VivekanandaWhat is the world that is to be given up? It is here. I am carrying it all with me. My own body. It is all for this body that I put my hand voluntarily upon my fellow human beings, just to keep it nice and give it a little pleasure. It is all for the body that I injure others and make mistakes.
Swami VivekanandaPlunge into the world, and then, after a time, when you have suffered and enjoyed all that is in it, will renunciation come; then will calmness come. So fulfill your desire for power and everything else, and after you have fulfilled the desire, will come the time when you will know that they are all very little things; but until you have fulfilled this desire, until you have passed through that activity, it is impossible for you to come to the state of calmness, serenity, and self-surrender.
Swami Vivekananda