In plain words
It is exceedingly sweet. So, whatever troubles, whatever sorrows and losses befall him, man still cranes his neck for a life of amṛta, longing to live on and on. Though he suffers so many kinds of pain, on the other hand he deludes himself: ‘Śānti and joy, these two I need most urgently.’ Where is he searching for them? Where is that Ānanda? Where is that happiness? Man does not know where happiness lies. He deludes himself that happiness lies only in physical, worldly and material ways of living. In the material world we do not find happiness. Śānti we see there even less. Śānti is the very form of God! Ānanda too is the very form of God! Where is this form of God? It is not somewhere outside, in the world. It is right within himself. Forgetting the Ānanda that is within himself, the Śānti that is within himself, believing they are in the world outside, man wastes his time.
Everything Springs from Man's Heart Alone
You may learn every branch of learning and win in the assembly; you may fight in battle as a hero; you may be born a king of kings and rule a kingdom; you may give gifts of gold and land; you may count the stars of the sky; you may tell the names of every living thing; you may learn all the eightfold sciences; you may make the journey to the moon; but, curbing the body, the senses and the rest, holding the mind still and turning it inward, becoming Ātmas ever steady, men cannot stand firm with discipline.