Transcendental subject matter is so nice that no one becomes tired of hearing or speaking. Others, who are not devotees, may think, "How can people devote so much time simply to talks of God?" But devotees are never satisfied or satiated in hearing and speaking about the Supreme Personality of Godhead or about His devotees. The more they hear and talk, the more they become enthusiastic to hear. The chanting of the Hare Krsna mantra is simply the repetition of three words, Hare, Kṛṣṇa and Rāma, but still devotees can go on chanting this Hare Kṛṣṇa mantra twenty-four hours a day without feeling fatigued.