The Bhagavadgita has been highly praised not only by prominent Indians such as Mahatma Gandhi but also by Aldous Huxley, Henry David Thoreau, Albert Einstein, J. Robert Oppenheimer, Ralph Waldo Emerson, Carl Jung, and Herman Hesse. The Gita's emphasis on selfless service was a prime source of inspiration for Gandhi, who said "When doubts haunt me, when disappointments stare me in the face, and I see not one ray of hope on the horizon, I turn to Bhagavad-Gita and find a verse to comfort me; and I immediately begin to smile in the midst of overwhelming sorrow. My life has been full of external tragedies and if they have not left any visible or invisible effect on me, I owe it to the teaching of the Bhagavad Gita."