Original Macmillan Edition: Bhagavad Gita As It Is. The most widely read edition of Bhagavad Gita in the world. Deluxe hardcover edition with 48 beautiful full-color plates, original Sanskrit, English translation and elaborate commentary by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada.
The spirit of Bhagavad-gita is mentioned in Bhagavad-gita itself. It is just like this: if we want to take a particular medicine, then we have to follow the directions written on the label. We cannot take the medicine according to our own whim or the direction of a friend. It must be taken according to the directions on the label or the directions given by a physician.
Similarly, Bhagavad-gita should be taken or accepted as it is directed by the speaker himself. The speaker of Bhagavad-gita is Lord Sri Krsna. He is mentioned on every page of Bhagavad-gita as the Supreme Personality of Godhead, Bhagavan. Of course the word "bhagavan" sometimes refers to any powerful person or any powerful demigod, and certainly here Bhagavan designates Lord Sri Krsna as a great personality, but at the same time we should know that Lord Sri Krsna is the Supreme Personality of Godhead, as is confirmed by all great acaryas (spiritual masters) like Sankaracarya, Ramanujacarya, Madhvacarya, Nimbarka Svami, Sri Caitanya Mahaprabhu and many other authorities of Vedic knowledge in India. The Lord Himself also establishes Himself as the Supreme Personality of Godhead in the Bhagavad-gita, and He is accepted as such in the Brahma-samhita and all the Puranas, especially the Srimad-Bhagavatam, known as the Bhagavata Purana.
Therefore we should take Bhagavad-gita as it is directed by the Personality of Godhead Himself.
The Lord informs Arjuna that this system of yoga, the Bhagavad-gita, was first spoken to the sun-god, and the sun-god explained it to Manu, and Manu explained it to Iksvaku, and in that way, by disciplic succession, one speaker after another, this yoga system has been coming down. But in the course of time it has become lost. Consequently the Lord has to speak it again, this time to Arjuna on the Battlefield of Kuruksetra.