1. A-B-C-D, Bhagavad-gita

    Bhagavad-gita is the A-B-C-D of spiritual knowledge. If we do not understand even the A-B-C-D of spiritual knowledge, then where is the progress? Unfortunately, we are neglecting. But it is our duty to propagate this knowledge of Bhagavad-gita.

    From Srila Prabhupada’s lecture on Bhagavad-gita 13.1–2 — September 25, 1973, Bombay