Answer: A. Because governments can only lock a person up physically, not mentally
In section three of "Civil Disobedience," Henry David Thoreau describes his own experience defying the law. He argues that even though he was imprisoned in body, the government could not imprison him mentally or defeat his spirit. He says that in fact, he was more free than most citizens, because he was free in his mind:
"I saw that, if there was a wall of stone between me and my townsmen, there was a still more difficult one to break through, before they could get to be as free as I was."