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 VivekanandaHave charity towards all beings. Pity those who are in distress. Love all creatures. Do not be jealous of anyone. Look not to the faults of others.
Swami VivekanandaIn nature alone are forms. That which is not of nature cannot have any forms, fine or gross. It must be formless.
Swami Vivekananda