Arjuna has accepted Krsna as guru, therefore He is chastising him that "You are lamenting on a subject matter which is not done by any learned man." That means "You are not a learned man. You are fool." "The learned man does not do like this" - that means "You are not learned man because you are doing this." So Krsna said that "Practically you are not in the knowledge of things. Still, you are lamenting on the bodily concept of life." Anyone who accepts this body as self, he is not only unlearned, but he is compared with the animal. That is the statement in the Vedic literature.
Letter to Svarupa Damodara, 11 February, 1976