Material Life Exploits us and Spiritual Life Nourishes us.
Vyasa dev is called Vyas (expander) because he expanded the glories of Krishna katha.
Narad muni, who gives Narayana to everyone, is guru of whole world.
On the request of Uddhava, Lord Krishna promised to stay in this world in form of Srimad Bhagvatam.
Krishna katha is life of the soul.