Bhagat Singh wrote "Why I Am An Atheist" in 1930 while he was a prisoner in the Lahore Central Jail. "The People", a weekly publication by Lala Lajpat Rai, published this book in 1931. To be clear, this is a 24-page essay rather than a book. This essay opens with a question whether vanity was the cause of Bhagat Singh’s atheism. Obviously, so many people had blamed him of being an atheist and he responded to this accusation clearly through this essay. He claimed that neither arrogance nor vanity prevented him from keeping his belief. He rejects the existence of the omnipotent supreme entity; vanity is not the cause of his denial. Bhagat Singh has been atheist since he was a young, ordinary man. He comes from a pretty religious household. He used to spend hours reciting the Gayatri Mantra in class, in fact. But ultimately he started questioning his belief, and he began to think on disbelief. When he joined the revolutionary party and when he came to know his comrade
The point, however, is to change it.