The root of evil is in the illusion that we are bodies. This, if any, is the original sin.
Swami VivekanandaGive up, renounce the world. Now we are like dogs strayed into a kitchen and eating a piece of meat, looking round in fear lest at any moment some one may come and drive them out. Instead of that, be a king and know you own the world. This never comes until you give it up and it ceases to bind. Give up mentally, if you do not physically. Give up from the heart of your hearts
Swami VivekanandaThe essential thing in religion is making the heart pure; the Kingdom of Heaven is within us, but only the pure in heart can see the King. While we think of the world, it is only the world for us; but let us come to it with the feeling that the world is God, and we shall have God.
Swami Vivekananda