Bhagavad Gita, Srimad Bhagavatam
Remembrance of Krishna is not possible for the impure soul who has not practiced Krishna consciousness in devotional service. Therefore, one should practice Krishna consciousness from the very beginning of life. If one wants to achieve success at the end of his life, the process of remembering Krishna is essential. Therefore, one should constantly and incessantly chant the Hare Krishna Maha Mantra.
Bhagavad Gita
Krishna appears in this material world in His original eternal form, with two hands, holding a flute. He appears exactly in His eternal body, uncontaminated by this material world.
Bhagavad Gita 4.6,
Srila Prabhupada
Bhagavad Gita
Srimad Bhaagavatam also affirms that one should follow in the footsteps of great devotees and that is the way of progress on the path of spiritual realization. The king or the executive head of a state, the father and the school teacher are all considered to be natural leaders of the innocent people in general. All such natural leaders have a great responsibility to their dependents. Therefore, they must be conversant with standard books of moral and spiritual codes.
Bhagavad Gita
Simply by chanting the holy name of Krishna – Hare Krishna, Hare Krishna, Krishna Krishna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare – a devotee of the Lord can approach the supreme destination easily and happily, but this destination cannot be approached by any other process of religion.
Purport on Bhagavad Gita 12.6