The "ego" like its correlative "non-ego", is the product of the body, mind etc. The only proof of the existence of the real Self is realisation.
Swami VivekanandaTo the person who desires nothing and does not get entangled in desires, the manifold changes of nature are one panorama of beauty and sublimity.
Swami VivekanandaThe glory of man is that he is a thinking being. It is the nature of man to think and therein he differs from animals
Swami VivekanandaAll these disciplines are for the purification of the heart. And as soon as it is pure, all truths flash upon it in a minute; all truth in the universe will manifest in your heart, if you are sufficiently pure.
Swami Vivekananda