Thomas Paine
Thomas paine was an English citizen. He emigrated to USA in 1775 ( at Benjamin Franklins request). So he had little part to play in ine American struggle for Independence. He later returned to Europe, supported the French Revolution, was branded an outlaw in Britain, almost executed in France, returned to USA ( At Thomas Jefferson's request) and dies a drunk and a pauper.

His misery was caused mostly by the fact he railed against the church and the Bible. And he had the knack of being at the wrong place at the right time. He supports French Revolution but was almost executed himself for not supporting the execution of the monarch. In 1776, he published Common Sense, a strong defense of American Independence from England. He joined the Continental Army and wasn't a success as a soldier, but he produced The Crisis , a collection of articles which helped inspire the Army. He provided the philospohical base justifying the American revolution, but left US soon after to Europe trying to produce a smokeless candle and an iron bridge.When he came back to US, his religious views set the populace against him that he died a drunk and a pauper.

The work chiefly responsible for the public outcry is the Age of Reason which starts as below

AGE OF REASON
by Thomas Paine

TO MY FELLOW-CITIZENS OF THE UNITED STATES OF AMERICA:

I PUT the following work under your protection. It contains my opinions upon Religion. You will do me the justice to remember, that I have always strenuously supported the Right of every Man to his own opinion, however different that opinion might be to mine. He who denies to another this right, makes a slave of himself to his present opinion, because he precludes himself the right of changing it.

The most formidable weapon against errors of every kind is Reason. I have never used any other, and I trust I never shall.

Your affectionate friend and fellow-citizen,

THOMAS PAINE

AGE OF REASON.
PART FIRST.

IT has been my intention, for several years past, to publish my thoughts upon religion. I am well aware of the difficulties that attend the subject, and from that consideration, had reserved it to a more advanced period of life. I intended it to be the last offering I should make to my fellow-citizens of all nations, and that at a time when the purity of the motive that induced me to it, could not admit of a question, even by those who might disapprove the work.

.....I believe in one God, and no more; and I hope for happiness beyond this life.

I believe in the equality of man; and I believe that religious duties consist in doing justice, loving mercy, and endeavoring to make our fellow-creatures happy.

But, lest it should be supposed that I believe in many other things in addition to these, I shall, in the progress of this work, declare the things I do not believe, and my reasons for not believing them.

I do not believe in the creed professed by the Jewish church, by the Roman church, by the Greek church, by the Turkish church, by the Protestant church, nor by any church that I know of. My own mind is my own church.

All national institutions of churches, whether Jewish, Christian or Turkish, appear to me no other than human inventions, set up to terrify and enslave mankind, and monopolize power and profit.

I do not mean by this declaration to condemn those who believe otherwise; they have the same right to their belief as I have to mine. But it is necessary to the happiness of man, that he be mentally faithful to himself. Infidelity does not consist in believing, or in disbelieving; it consists in professing to believe what he does not believe.

It is impossible to calculate the moral mischief, if I may so express it, that mental lying has produced in society. When a man has so far corrupted and prostituted the chastity of his mind, as to subscribe his professional belief to things he does not believe, he has prepared himself for the commission of every other crime. He takes up the trade of a priest for the sake of gain, and in order to qualify himself for that trade, he begins with a perjury. Can we conceive any thing more destructive to morality than this?

Soon after I had published the pamphlet Common Sense, in America, I saw the exceeding probability that a revolution in the system of government would be followed by a revolution in the system of religion. The adulterous connection of church and state, wherever it had taken place, whether Jewish, Christian, or Turkish, had so effectually prohibited by pains and penalties, every discussion upon established creeds, and upon first principles of religion, that until the system of government should be changed, those subjects could not be brought fairly and openly before the world; but that whenever this should be done, a revolution in the system of religion would follow. Human inventions and priestcraft would be detected; and man would return to the pure, unmixed and unadulterated belief of one God, and no more.

Every national church or religion has established itself by pretending some special mission from God, communicated to certain individuals. The Jews have their Moses; the Christians their Jesus Christ, their apostles and saints; and the Turks their Mahomet, as if the way to God was not open to every man alike.

Each of those churches show certain books, which they call revelation, or the word of God. The Jews say, that their word of God was given by God to Moses, face to face; the Christians say, that their word of God came by divine inspiration: and the Turks say, that their word of God (the Koran) was brought by an angel from Heaven. Each of those churches accuse the other of unbelief; and for my own part, I disbelieve them all.

As it is necessary to affix right ideas to words, I will, before I proceed further into the subject, offer some other observations on the word revelation. Revelation, when applied to religion, means something communicated immediately from God to man.

No one will deny or dispute the power of the Almighty to make such a communication, if he pleases. But admitting, for the sake of a case, that something has been revealed to a certain person, and not revealed to any other person, it is revelation to that person only. When he tells it to a second person, a second to a third, a third to a fourth, and so on, it ceases to be a revelation to all those persons. It is revelation to the first person only, and hearsay to every other, and consequently they are not obliged to believe it.

It is a contradiction in terms and ideas, to call anything a revelation that comes to us at second-hand, either verbally or in writing. Revelation is necessarily limited to the first communication -- after this, it is only an account of something which that person says was a revelation made to him; and though he may find himself obliged to believe it, it cannot be incumbent on me to believe it in the same manner; for it was not a revelation made to me, and I have only his word for it that it was made to him.

When Moses told the children of Israel that he received the two tables of the commandments from the hands of God, they were not obliged to believe him, because they had no other authority for it than his telling them so; and I have no other authority for it than some historian telling me so. The commandments carry no internal evidence of divinity with them; they contain some good moral precepts, such as any man qualified to be a lawgiver, or a legislator, could produce himself, without having recourse to supernatural intervention

the full text is at http://www.ushistory.org/paine/reason/reason1.htm.
A gripping start and sure would make good reading !