There were a few letters Bhagat Singh wrote while in jail, these letters form a mirror of his thoughts as a person going to die in a few days.
“I deny the very existence of that Almighty Supreme being. Why I deny it shall be dealt with later on. Here I want to clear one thing, that it is not vanity that has actuated me to adopt the doctrines of atheism. I am neither a rival nor an incarnation nor the Supreme Being Himself. One point is decided, that it is not vanity that has led me to this mode of thinking. Let me examine the facts to disprove this allegation. My atheism is not of so recent origin. I had stopped believing in God when I was an obscure young man.”
“The most important thing was the clear conception of the ideal for which we were to fight, As there were no important activities in the field of action I got ample opportunity to study various ideals of the world revolution. I studied Bakunin, the Anarchist leader, something of Marx the father of Communism and much of Lenin, Trotsky and others the men who had successfully carried out a revolution in their country. They were all atheists. Bakunin's "God and State", though only fragmentary, is an interesting study of the subject. Later still I came across a book entitled 'Common Sense' by Nirlamba Swami. It was only a sort of mystic atheism. This subject became of utmost interest to me. By the end of 1926 I had been convinced as to the baselessness of the theory of existence of an almighty supreme being who created, guided and controlled the universe. I had given out this disbelief of mine. I began discussion on the subjects with my friends. I had become a pronounced atheist.”
“'Belief' softens the hardships, even can make them pleasant. In God man can find very strong consolation and support. Without Him, the man has to depend upon himself. To stand upon one's own legs amid storms and hurricanes is not a child's play. At such testing moments, vanity, if any, evaporates, and man cannot dare to defy the general beliefs, if he does, then we must conclude that he has got certain other strength than mere vanity. This is exactly the situation now. Judgment is already too well known. Within a week it is to be pronounced. What is the consolation with the exception of the idea that I am going to sacrifice my life for a cause ? A God-believing Hindu might be expecting to be reborn as a king, a Muslim or a Christian might dream of the luxuries to be- enjoyed in paradise and the reward he is to get for his sufferings and sacrifices. But what am I to expect? I know the moment the rope is fitted round my neck and rafters removed, from under my feet. That will be the final moment, that will be the last moment. I, or to be more precise, my soul, as interpreted in the metaphysical terminology, shall all be finished there. Nothing further.”
“British rule is here not because God wills it but because they possess power and we do not dare to oppose them. Not that it is with the help of God that they are keeping us under their subjection but it is with the help of guns and rifles, bomb and bullets, police and militia and our apathy that they are successfully committing the most deplorable sin against society- the outrageous exploitation of one nation by another. Where is God ? What is he doing? Is he enjoying all I these woes of human race ? A Nero; A Changez : Down with him.
Do you ask me how I explain the origin of this world and origin of man? Alright I tell you. Charles Darwin has tried to throw some light on the subject. Study him. Read Soham Swami's "Commonsense". It shall answer your question to some extent. This is a phenomenon of nature. The accidental mixture of different substances in the shape of nebulae produced this earth. When? Consult history. The same process produced animals and in the long run man. Read Darwin's 'Origin of Species'. And all the later progress is due to man's constant conflict with nature and his efforts to override it. This is the briefest possible explanation of this phenomenon.”
“When informed of my atheism, he said, "During your last days you will begin to believe". I said, No, dear Sir, it shall not be. I will think that to be an act of degradation and demoralization on my part. For selfish motives I am not going to pray. Readers and friends, "Is this vanity"? If it is, I stand for it.”