Therefore a person fully absorbed in the bodily concept of life is surely killing himself by not making spiritual progress. Such a person is called pasu-ghna. Especially excluded from spiritual life are the animal hunters, who are not interested in hearing and chanting the holy name of the Lord. Such hunters are always unhappy, both in this life and in the next. It is therefore said that a hunter should neither die nor live because for such persons both living and dying are troublesome.
A. C. Bhaktivedanta Swami PrabhupadaOne must execute devotional service under the guidance of a devotee or directly under the guidance of the Supreme Personality of Godhead. It is not possible, however, to train oneself without guidance from the spiritual master.
A. C. Bhaktivedanta Swami PrabhupadaOur first duty is to satisfy the spiritual master, who can arrange for the Lord's mercy. A common man must first begin to serve the spiritual master or the devotee. Then, through the mercy of the devotee, the Lord will be satisfied. Unless one receives the dust of a devotee's lotus feet on one's head, there is no possibility of advancement. Unless one approaches a pure devotee, he cannot understand the Supreme Personality of Godhead.
A. C. Bhaktivedanta Swami PrabhupadaIf you sell diamonds, you cannot expect to have many customers. But a diamond is a diamond even if there are no customers.
A. C. Bhaktivedanta Swami Prabhupada