Sri Aurobindo (15 August 1872 – 5 December 1950)was an Indian nationalist and freedom fighter, major Indian English poet, philosopher, and yogi.

The yoga we practice is not for ourselves alone, but for the Divine; its aim is to work out the will of the Divine in the world, to effect a spiritual transformation and to bring down a divine nature and a divine life into the mental, vital and physical nature and life of humanity. Its object is not personal Mukti, although Mukti is a necessary condition of the yoga, but the liberation and transformation of the human being. It is not personal Ananda, but the bringing down of the divine Ananda -- Christ's kingdom of heaven, our Satyayuga -- upon the earth. 

-- Sri Aurobindo

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http://www.sriaurobindosociety.org.in/
http://www.sriaurobindoashram.org/

He joined the movement for India's freedom from British rule and for a duration (1905–10), became one of its most important leaders, before turning to developing his own vision and philosophy of human progress and spiritual evolution. The central theme of Sri Aurobindo's is the evolution of life into a "life divine". In his own words: "Man is a transitional being. He is not final. The step from man to superman is the next approaching achievement in the earth evolution. It is inevitable because it is at once the intention of the inner spirit and the logic of Nature's process".
The principal writings of Sri Aurobindo include, in prose, The Life Divine, considered his single great work of metaphysics,The Synthesis of Yoga, Secrets of the Vedas, Essays on the Gita, The Human Cycle, The Ideal of Human Unity, Renaissance in India and other essays, Supramental Manifestation upon Earth, The Future Poetry, Thoughts and Aphorisms and several volumes of letters. In poetry, his principal work is "Savitri - a Legend and a Symbol" in blank verse.

" Lead me from the unreal to the Real.  
Lead me from darkness to Light.
Lead me from death to Immortality "

- From: The Upanishads