Among the priceless teachings that may be found in the great Hindu poem of the Mahabharata, there is none so rare and and precious as this, 'The Lord's Song'. Since it fell from the divine lips of Shri Krishna on the field of battle and stilled the surging emotions of his disciple and friend, how many troubled hearts has it quieted and strengthened, how many weary souls has it led to Him! It is meant to lift the aspirant from the lower levels of renunciation, where objects are renounced, to the loftier heights where desires are dead, and where the Yogi dwells in calm and ceaseless contemplation, while his body and mind are actively employed in discharging the duties that fall to his lot in life.
That the spiritual man need not be a recluse,that union with the divine Life may be achieved and maintained in the midst of worldly affairs, that the obstacles to the union lie not outside us but within us-such is the central lesson of the BHAGAVADGITA
Annie Besant in the preface to the book.