One evening when Swami Vivekananda was returning from Dakshineswar with Devendra, he said to him: “Look at the Milky Way. It is just like a stream of milk. Do you know that every moment millions of suns and moons are being formed within it? That is the source of the stars. Just imagine what an inconceivable Being is the ruler of this vast universe! And a tiny man with his limited intellect is trying to fathom and comprehend Him! Is He so easily obtainable?” After listening to Swamiji, Devendra was absorbed in the thought of the Infinite. He then concluded that it was not possible for a man to realize God. This greatly troubled him, and he could not sleep for three days. At last he went to Girish and told him the cause of his anxiety. Girish said to him: “But it is also true that the Ruler of this universe, from whom this cosmic creation evolves, incarnates Himself in a human body and gives liberation to sinners like us.” Devendra was relieved to hear this, and his mind became calm again. (Source: They Lived with God)