(During his sojourn in Calcutta in 1897, Swami Vivekananda…. talked eloquently in Bengali on the Gita. The following is the … summary of the discourse as it was entered in the Math diary)

The book known as the Gita forms a part of the Mahâbhârata. To understand the Gita properly, several things are very important to know. First, whether it formed a part of the Mahabharata, i.e. whether the authorship attributed to Veda-Vyâsa was true,...; secondly, whether there was any historical personality of the name of Krishna; thirdly, whether the great war of Kurukshetra as mentioned in the Gita actually took place; and fourthly, whether Arjuna and others were real historical persons.

…. "Vyasa" was only a title. Anyone who composed a new Purâna was known by the name of Vyasa, …. Another point is, the book, Gita, had not been much known to the generality of people before Shankarâchârya made it famous by writing his great commentary on it...Some infer that Shankaracharya was the author of the Gita, and that it was he who foisted it into the body of the Mahabharata.

Then as to the second point in question, much doubt exists about the personality of Krishna. In one place in the Chhândogya Upanishad we find mention of Krishna, the son of Devaki, who received spiritual instructions from one Ghora, a Yogi. In the Mahabharata, Krishna is the king of Dwârakâ; and in the Vishnu Purâna we find a description of Krishna playing with the Gopis. Again, in the Bhâgavata, the account of his Râsalilâ is detailed at length. In very ancient times in our country there was in vogue an Utsava called Madanotsava (celebration in honour of Cupid). That very thing was transformed into Dola and thrust upon the shoulders of Krishna. …. In ancient times there was very little tendency in our country to find out truths by historical research. So any one could say what he thought best without substantiating it with proper facts and evidence.... In ancient times they had no knowledge whatever of geography; imagination ran riot. And so we meet with such fantastic creations of the brain as sweet-ocean, milk-ocean, clarified-butter-ocean, curd-ocean, etc! In the Puranas, we find one living ten thousand years, another a hundred thousand years! But the Vedas say, — "Man lives a hundred years." Whom shall we follow here? So, to reach a correct conclusion in the case of Krishna is well-nigh impossible.

It is human nature to build round the real character of a great man all sorts of imaginary superhuman attributes. As regards Krishna the same must have happened, but it seems quite probable that he was a king. Quite probable I say, because in ancient times in our country it was chiefly the kings who exerted themselves most in the preaching of Brahma-Jnâna. …...

Now to the third point, bearing on the subject of the Kurukshetra War, no special evidence in support of it can be adduced. But there is no doubt that there was a war fought between the Kurus and the Panchâlas. Another thing: how could there be so much discussion about Jnâna, Bhakti, and Yoga on the battle-field, where the huge army stood in battle array ready to fight, just waiting for the last signal? And was any shorthand writer present there to note down every word spoken between Krishna and Arjuna, in the din and turmoil of the battle-field? According to some, this Kurukshetra War is only an allegory. When we sum up its esoteric significance, it means the war which is constantly going on within man between the tendencies of good and evil. This meaning, too, may not be irrational.

About the fourth point, there is enough ground of doubt as regards the historicity of Arjuna and others, and it is this: Shatapatha Brâhmana is a very ancient book. In it are mentioned somewhere all the names of those who were the performers of the Ashvamedha Yajna: but in those places there is not only no mention, but no hint even of the names of Arjuna and others, though it speaks of Janamejaya, the son of Parikshit who was a grandson of Arjuna. Yet in the Mahabharata and other books it is stated that Yudhishthira, Arjuna, and others celebrated the Ashvamedha sacrifice.

One thing should be especially remembered here, that there is no connection between these historical researches and our real aim, which is the knowledge that leads to the acquirement of Dharma. Even if the historicity of the whole thing is proved to be absolutely false today, it will not in the least be any loss to us. Then what is the use of so much historical research, you may ask. It has its use, because we have to get at the truth; it will not do for us to remain bound by wrong ideas born of ignorance. In this country people think very little of the importance of such inquiries. Many of the sects believe that in order to preach a good thing which may be beneficial to many, there is no harm in telling an untruth, if that helps such preaching, or in other words, the end justifies the means. Hence we find many of our Tantras beginning with, "Mahâdeva said to Pârvati". …. Such is the power of superstition, or faith in old traditions without inquiry into its truth, that it keeps men bound hand and foot, so much so, that even Jesus the Christ, Mohammed, and other great men believed in many such superstitions and could not shake them off. You have to keep your eye always fixed on truth only and shun all superstitions completely.

Now it is for us to see what there is in the Gita. …The Upanishads deal elaborately with Shraddhâ in many places, but hardly mention Bhakti. In the Gita, on the other hand, the subject of Bhakti is not only again and again dealt with, but in it, the innate spirit of Bhakti has attained its culmination.

Now let us see some of the main points discussed in the Gita. Wherein lies the originality of the Gita which distinguishes it from all preceding scriptures? …The reconciliation of the different paths of Dharma, and work without desire or attachment — these are the two special characteristics of the Gita.
 
Let us now read a little from the second chapter.
The Blessed Lord said:
……
"Yield not to unmanliness, O son of Prithâ! Ill doth it become thee. Cast off this mean faint-heartedness and arise, O scorcher of shine enemies!"
 
….. The nature of a man of Sattva Guna is, that he is equally calm in all situations in life — whether it be prosperity or adversity. But Arjuna was afraid, he was overwhelmed with pity. ….Frequently in our lives also such things are seen to happen. Many people think they are Sâttvika by nature, but they are really nothing but Tâmasika. ….. …. Here, in Arjuna, the mighty warrior, it has come under the guise of Dayâ (pity).
 
In order to remove this delusion which had overtaken Arjuna, what did the Bhagavân say? …. the Bhagavan speak to Arjuna. — "It doth not befit thee!" "Thou art Atman imperishable, beyond all evil. Having forgotten thy real nature, thou hast, by thinking thyself a sinner, as one afflicted with bodily evils and mental grief, thou hast made thyself so — this doth not befit thee!" — so says the Bhagavan: — Yield not to unmanliness, O son of Pritha. There is in the world neither sin nor misery, neither disease nor grief; if there is anything in the world which can be called sin, it is this — "fear"; know that any work which brings out the latent power in thee is Punya (virtue); and that which makes thy body and mind weak is, verily, sin. Shake off this weakness, this faintheartedness! — Thou art a hero, a Vira; this is unbecoming of thee."...