"Guru Nanak Dev - The Apostle of Peace" is an attempt by Stuti Malhotra to elaborate the concept of peace in Sikhism. This is her tribute to the great Guru on the occasion of his 550th birth anniversary, which is being celebrated all over the world. I think this is the right time to discuss the teachings of Guru Nanak Dev ji when human beings are facing multiple problems worldwide. There are many human races, ethnic groups and religions on this earth. Religions, which should have taught people to treat all human beings as equal, have acted, on the contrary, as divisive forces. This was the situation in India in the 15th century, when the founder of Sikhism, Guru Nanak Dev ji (1469-1539) was born. The world is facing similar divisive activism at the present time, which makes the philosophy of the Guru Sahib even more relevant nowadays. In his preaching, Guru Nanak laid great emphasis on the brotherhood of mankind and the fatherhood of God. His universal message is one of peace, love, unity, mutual respect, service and dedication to all of mankind. He turned people away from violence towards peace, converted tyrants into compassionate human beings and transformed societies afflicted by different kinds of difficulties into blissful communities."