The impersonalists who try to avoid everything material may undergo severe austerities, but they miss the opportunity of being engaged in the service of the Lord. Thus their renunciation is not sufficient for perfection. There are many instances where, following such artificial renunciation without any contact with devotional service, the impersonalist again fell down and became attracted to the material contamination. There are many supposed renouncers even at the present moment who officially become sannyāsīs or renouncers and outwardly claim that spiritual existence is truth and material existence untruth. In this way, artificially they make a show of renunciation of the material world. However, because they cannot reach the point of devotional service, they fail to achieve the goal and again come back to material activities, such as philanthropic work, political agitation, etc. There are many instances of so-called sannyāsīs who gave up the world as untruth, but again came to the material world because they were not seeking their real repose at the lotus feet of the Lord.
One should not give up anything which can be utilized in the service of the Lord. That is a secret of devotional service. Anything that can be utilized in advancing Kṛṣṇa consciousness and devotional service should be accepted. For instance, we are using many machines for the advancement of our present Kṛṣṇa consciousness movement, machines like typewriters, dictaphones, tape recorders, microphones and airplanes. Sometimes people ask us, "Why are you utilizing material products if you condemn the advancement of material civilization?" But actually we do not condemn. We simply ask people to do whatever they are doing in Kṛṣṇa consciousness. This is the same principle on which, in the Bhagavad-gītā, Kṛṣṇa advised Arjuna to utilize his fighting abilities in devotional service. Similarly, we are utilizing these machines for Kṛṣṇa's service. With such sentiment for Kṛṣṇa, or Kṛṣṇa consciousness, we can accept everything. If the typewriter can be utilized for advancing our Kṛṣṇa consciousness movement, we must accept it. Similarly, the dictaphone or any other machine must be used. Our vision is that Kṛṣṇa is everything. Kṛṣṇa is the cause and effect, and nothing belongs to us. Kṛṣṇa's things must be used in the service of Kṛṣṇa. That is our vision.
This does not mean, however, that we should give up the principles of discharging devotional service or neglect abiding by the rules and regulations prescribed therein. In the neophyte stage of devotion one must follow all the principles, regulated by the authority of the spiritual master. The acceptance and rejection of things should always be in pursuance of the devotional principles; not that one can independently manufacture some idea of what should be accepted or rejected. The spiritual master as the visible manifestation of Kṛṣṇa is necessary, therefore, to direct the devotee on behalf of the Supreme Personality of Godhead.
The spiritual master must never be carried away by an accumulation of wealth or a large number of followers. A bona fide spiritual master will never become like that. But sometimes, if a spiritual master is not properly authorized, and only on his own initiative becomes a spiritual master, he may be carried away by an accumulation of wealth and large numbers of disciples. His is not a very high grade of devotional service. If a person is carried away by such achievements, then his devotional service becomes slackened. One should, therefore, strictly adhere to the principles of disciplic succession.
A Kṛṣṇa conscious person, being naturally purified, has no need of developing any other purificatory process of thought or action. On account of his being highly elevated in Kṛṣṇa consciousness, he has already acquired all the good qualities and is following the rules and regulations prescribed for the mystic yogic process. Such rules are automatically practiced by the devotees. A concrete example is the quality of nonviolence, which is considered a good qualification. A devotee is naturally nonviolent and therefore doesn't have to practice nonviolence separately. Some people seek purification by joining a vegetarian movement, but a devotee is automatically a vegetarian. He doesn't need to practice separately in this matter or to join any society for vegetarians. He is automatically a vegetarian.