It is a fact that by serving the spiritual master one becomes free from material life and makes spiritual advancement. I have not done anything personally, very wonderful. I am simply serving my spiritual master, Srila Bhaktisiddhanta Sarasvati Goswami Maharaja and all the acaryas in the disciplic succession. If I have done anything of credit it is that I have not changed their teachings. I have not added anything of my own interpretation.
From a letter by Srila Prabhupada, 16 May, 1974