Śrī Kṛṣṇa, the Personality of Godhead, imparted to Marshal Arjuna the vitally important teachings of Bhagavad-gītā only when He saw that Arjuna had surrendered to Him without any vanity regarding his own erudition, and without any other reservation. It is very common for us, like Arjuna, to try to dissipate our disillusionments by our own devices, culled from our own mundane experience. This attempt to remove our daily bodily and mental difficulties is always misdirected. Unless one tries to solve his problems from the perspective of eternal varities, there cannot be any peace whatsoever, either in this life or in the life after death. That is the supreme teaching of Bhagavad-gītā.
This spiritual subject matter, which is transcendental to the hankerings of the material body and mind, is our supreme need. Unless we reach this transcendental plane of activities, we cannot achieve real peace. This spiritual, transcendental plane is the plane of eternal life, without which the material body and mind would have no existence. However, at present we do not possess any information of this eternal life, although we have much pride, even vanity, about our material knowledge.
We are more or less absorbed in the external material designations, the external dresses that now cover the eternally living soul. And because we have absorbed ourselves in these external designations of the spirit soul, we encounter so much disunity and turmoil. When we are free from such designations—when our real nature will be uncovered—then and only then will we attain our dream of real happiness and peace. Our present attempts to remove the difficulties of the material world—through the pretensions of erudite scientists, great statesmen, and mahātmās—do not reach the spiritual, transcendental plane, but simply garb the body and mind with various colorful dresses. And thus these attempts will be always frustrated. That is the intrinsic instruction of Bhagavad-gītā.