Though before its advent, Yoga, Jnana, Bhakti, etc. had each its strong adherents, they all quarrelled among themselves, each claiming superiority for his own chosen path; no one ever tried to seek for reconciliation among these different paths. It was the author of the Gita who for the first time tried to harmonise these. He took the best from what all the sects then existing had to offer and threaded them in the Gita.
The Nishkâma Karma, or work without desire or attachment. People nowadays understand what is meant by this in various ways. Some say what is implied by being unattached is to become purposeless. If that were its real meaning, then heartless brutes and the walls would be the best exponents of the performance of Nishkama Karma. The true Nishkama Karmi (performer of work without desire) is neither to be like a brute, nor to be inert, nor heartless. He is not Tâmasika but of pure Sattva. His heart is so full of love and sympathy that he can embrace the whole world with his love. The world at large cannot generally comprehend his all-embracing love and sympathy.