Whenever we read the obscene stories, the voluptuous debaucheries, the cruel and torturous executions, the unrelenting vindictiveness, with which mor… - Thomas Paine

But when a system of religion is made to grow out of a supposed system of creation that is not true, and to unite itself therewith in a manner almost inseparable therefrom, the case assumes an entirely different ground. It is then that errors, not morally bad, become fraught with the same mischiefs as if they were. It is then that the truth, though otherwise indifferent itself, becomes an essential, by becoming the criterion that either confirms by corresponding evidence, or denies by contradictory evidence, the reality of the religion itself. In this view of the case it is the moral duty of man to obtain every possible evidence that the structure of the heavens, or any other part of creation affords, with respect to systems of religion. But this, the supporters or partizans of the christian system, as if dreading the result, incessantly opposed, and not only rejected the sciences, but persecuted the professors.

That which is now called natural philosophy, embracing the whole circle of science, of which astronomy occupies the chief place, is the study of the works of God, and of the power and wisdom of God in his works, and is the true theology.

As to the theology that is now studied in its place, it is the study of human opinions and of human fancies concerning God. It is not the study of God himself in the works that he has made, but in the works or writings that man has made; and it is not among the least of the mischiefs that the Christian system has done to the world, that it has abandoned the original and beautiful system of theology, like a beautiful innocent, to distress and reproach, to make room for the hag of superstition.

Every person of learning is finally his own teacher; the reason of which is, that principles, being of a distinct quality to circumstances, cannot be impressed upon the memory; their place of mental residence is the understanding, and they are never so lasting as when they begin by conception.