"Society is composed of men, and every man is a FREE agent. Since man is free, he can choose; since he can choose, he can err; since he can err, he can suffer. I go further: He must err and he must suffer; for his starting point is ignorance, and in his ignorance he sees before him an infinite number of unknown roads, all of which save one lead to error."

Next Quote

Reason and free inquiry are the only effective agents against error. Give a loose to them, they will support the true religion by bringing every false one to their tribunal, to the test of their investigation. They are the natural enemies of error and error only. Had not the Roman government permitted free inquiry, Christianity could never have been introduced. Had not free inquiry been indulged at the era of the Reformation, the corruption of Christianity could not have been purged away.

— Thomas Jefferson