Thus sacrifices of various sorts are laid down in the Vedas. Know them all to be produced from action, and knowing this you will be released (from the fetters of this world). The sacrifice of knowledge, O terror of (your) foes! is superior to the sacrifice of wealth, for action, O son of Pritha! is wholly and entirely comprehended in knowledge. That you should learn by salutation, question, and service. The men of knowledge who perceive the truth will teach knowledge to you.