…I wish everyone of my devotees may purify himself from all material contamination and thus be eligible for entering into the association of the Supreme Personality of Godhead. Material life means indulging in sense gratification which diverts our attention from spiritual importance and thus we remain captive under the bewilderment of Maya. This is the most dangerous of our condition of life. Intelligent persons therefore try to avoid it under the protection of Krsna and the Spiritual Master. (from a letter by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada Aug.25 1970)
…A conditioned soul, entangled in material contamination, is sure to act in the material atmosphere, and yet he has to get out of such an environment. The process by which the conditioned soul can get out of the material atmosphere is Kṛṣṇa consciousness. (purport Bg. 4.24)
…By acting in Kṛṣṇa consciousness for the satisfaction of the senses of Kṛṣṇa, any action, whether of the body, mind, intelligence or even of the senses, is purified of material contamination. There are no material reactions resulting from the activities of a Kṛṣṇa conscious person. Therefore, purified activities, which are generally called sadācāra, can be easily performed by acting in Kṛṣṇa consciousness. (purport Bg. 5.11)
The Hare Krishna Movement 