The document discusses the Bhagavad Gita and what great thinkers have said about it. It provides quotes from Albert Einstein, Aldous Huxley, Rishi Aurobindo, Herman Hesse, Mahatma Gandhi, Ralph Waldo Emerson, Rudolph Steiner, Swami Prabhupada, Vivekananda, Henry David Thoreau, Carl Jung, Adi Sankara and others praising the Bhagavad Gita for its wisdom and teachings on spiritual evolution, karma yoga, and as a guide for human existence. The document also provides short summaries of the teachings and philosophy of the Bhagavad Gita.