(Click to enlarge photo of Srila Prabhupada having darshan of Radha-Govinda, New York)
"This cultivation of Kṛṣṇa consciousness is not material. The Lord has generally three energies—namely, the external energy, the internal energy, and the marginal energy. The living entities are called marginal energy, and the material cosmic manifestation is the action of the external or material energy. Then there is the spiritual world, which is a manifestation of the internal energy. The living entities, who are called marginal energy, perform material activities when acting under the inferior external energy. And when they engage in activities under the internal spiritual energy, their activities are called Kṛṣṇa conscious. This means that those who are great souls or great devotees do not act under the spell of material energy, but act instead under the protection of the spiritual energy. Any activities done in devotional service or in Kṛṣṇa consciousness are directly under the control of spiritual energy. In other words, energy is a sort of strength, and this strength can be spiritualized by the mercy of both the bona fide spiritual master and Kṛṣṇa.
In the Caitanya-caritāmṛta by Kṛṣṇadāsa Kavirāja Gosvāmī, Lord Caitanya states that it is a fortunate person who comes in contact with a bona fide spiritual master by the grace of Kṛṣṇa. One who is serious about spiritual life is given by Kṛṣṇa the intelligence to come in contact with a bona fide spiritual master, and then by the grace of the spiritual master one becomes advanced in Kṛṣṇa consciousness. In this way the whole jurisdiction of Kṛṣṇa consciousness is directly under the spiritual energy—Kṛṣṇa and the spiritual master. This has nothing to do with the material world."