Speech occurs by vibrating air within the sky. One who meditates on the Supreme Lord as the personified sky and air thereby acquires the ability to hear that which is vibrated at great distance. The word prana indicates that the Lord is the personified life air of the individual living entities and for the total aggregate of life forms. Ultimately, the pure devotees meditate on the supreme vibration -- Hare Krishna, Hare Krishna, Krishna Krishna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare -- and are thus able to hear the speech originating from liberated living entities far beyond the material universe. Any living entity can hear such discussions by reading Srimad-Bhagavatam, Bhagavad-gita and other such literatures. One who has properly understood the opulences of the Supreme Personality of Godhead finds all perfection, mystic and otherwise, in Krishna consciousness.