Bhagavad-gita was specifically spoken to Arjuna, and the visva-rupa was exhibited before him at his request. He was awarded the specific eyes to see this visva-rupa, yet although he was able to see the Lords innumerable hands and mouths, he was unable to see Him completely. Since Arjuna was unable to estimate the length and breadth of the potency of the Lord, who else would be able to do so? One may only indulge in miscalculation like the frog-philosopher. The frog-philosopher wanted to estimate the length and breadth of the Pacific Ocean by his experience of a well three cubic feet large, and thus he began to puff himself up to become as big as the Pacific Ocean, but at last he burst and died by this process. This story is applicable to the mental philosophers who, under the illusion of the Lords external energy, indulge in estimating the length and breadth of the Supreme Lord. The best path is to become a cool-headed, submissive devotee of the Lord, try to hear about the Lord from the bona fide spiritual master, and thus serve the Lord in transcendental loving service, as suggested in the previous verse.