Born Siddhartha, he learned the inevitable fate of all living beings and was very much perturbed  and plunged into deep thought.  he renounced the world in search of truth.  His contribution to the spiritual and cultural advancement of the humanity is beyond measure.

At age 40 Mohammad received his first 'divine revelation' and from this time onward he felt he had a mission in life to uplift his people from the precipice of moral degradation and debased idolatry.

Born in 788 A.D., Sankara renounced the world before his mind could be contaminated by it, and embraced monasticism dedicating his life to God-realization and, also, to bringing back India to its spiritual roots.

Lord Mahavir was the 24th tirthankar or prophet of the Jain religion.  He renounced the world and became a wandering monk practicing the religion of non-violence and non-possession.

Founder of Sikh religion who started his mission of spreading a new gospel to propagate divine love and that God is one, God is unity, and all human beings are equal in the eyes of God.