The Bhagavad-Gita is perhaps the most systematic scriptural statement of the Perennial Philosophy. To a world at war, a world that, because it lacks the intellectual and spiritual prerequisites to peace, can only hope to patch up some kind of precarious armed truce, it stands pointing, clearly and unmistakably, to the only road of escape from the self-imposed necessity of self-destruction.
Introduction to the Bhagavad-Gita (1944)