Guru Nanak was born on 15 April 1469, on the day of Kartik Purnima in a village named Talwandi. The tradition of Guru and disciple is very ancient in India. The place of Guru is considered to be even higher than God. It is only through the Guru that one attains worldly knowledge, and only through the Guru does one realize the enlightenment of how to attain God. Guru Nanak was born at a time when there was no central organized power in India. Foreign invaders were engaged in looting the country. In the name of religion, superstitions and rituals were spread all around. In such a difficult times, Guru Nanak proved to be a great philosopher & thinker of Sikhism. Guru Nanak won the hearts of people with his melodious simple voice. In a very simple language the message of Ek Onkar was explained to the whole world that all humans are brothers of each other. God is the Father of all, then how can we be high and low despite being the children of one Father? In order to clear all these misconceptions, he implemented the teachings in his own life and became an ideal by propagating religion all around. He set an example of social harmony and gave the true message of humanity.