Sukadeva Gosvami
The conditioned soul sometimes personally appreciates the futility of sense enjoyment in the material world, and he sometimes considers material enjoyment to be full of miseries. However, due to his strong bodily conception, his memory is destroyed, and again and again he runs after material enjoyment, just as an animal runs after a mirage in the desert.
A.C. Bhaktivedanta Swami Prabhupada, Sukadeva Gosvami
What is painful for saintly persons who strictly adhere to the truth? How could there not be independence for pure devotees who know the Supreme Lord as the substance? What deeds are forbidden for persons of the lowest character and what cannot be given up for the sake of Lord Krishna by those who have fully surrendered at His lotus feet?
A.C. Bhaktivedanta Swami Prabhupada
One must accept the words of an Acharya, a bona fide spiritual master, to clear the path for spiritual advancement. This is the secret of success. However, one’s guide must be a spiritual master who is actually an unalloyed devotee strictly following the instructions of the previous acharya without deviation. Whatever the spiritual master says must be accepted by the disciple. Only then is success certain. This is Vedic system.
Bhaktivinoda Thakur
If one chants the holy names of the lord, even in helpless condition or without desiring to do so, all the reactions of his sinful life departs, just as when lion roars, all the small animals flee in fear.