Based on this passage, how did Thoreau feel about his confinement?
inwardly free
I have paid no poll tax for six years. I was put
into a jail once on this account, for one night;
and, as I stood considering the walls of solid
stone, two or three feet thick, the door of
wood and iron, a foot thick, and the iron
grating which strained the light, I could not
help being struck with the foolishness of that
institution which treated me as if I were mere
flesh and blood and bones, to be locked up. I
wondered that it should have concluded at
length that this was the best use it could put
me to, and had never thought to avail itself of
my services in some way. I saw that, if there
was a wall of stone between me and my
mentally imprisoned
united with American citizens