An Engineer is interested to talk / listen about Engineering matter only. Same way Doctors, politicians and other professionals / specialists, etc. are interested about their subjects only. But Bhagavad Gita is the only unique subject matter in this entire world which is of interest to all human beings. The subjects narrated are beyond any ordinary human conception that it can elevate one’s consciousness into such a level that one will become fully satisfied in living a simple life without any form of anxieties, peaceful, humble and never inclined to do any agitating unnecessary activities. The subjects discussed can unite all form of living entities together in this world irrespective of any religion, country, race, caste or creed and ensure that all can co-exist peacefully without any cut throat competition / exploitation of any resources. Reading / hearing of complete Bhagavad Gita atleast once is of at most important duty of any human being.