Why I am an Atheist' is an essay written by him in 1930 in Lahore Central Jail. The essay was a reply to his religious friends who thought Bhagat Singh became an atheist because of his vanity. We know Bhagat Singh as the revolutionary who challenged the British rule and sacrificed his life for the motherland. But very few of us know that he was also an independent thinker. After the death of Bhagat Singh, the essay was published on 27 September 1931 in Lala Lajpat Rai's English weekly 'The People'. In this essay, he extensively talks about his beliefs and how he reached the conclusion that there exists no god.