don't make no difference whether you do
right or wrong, a person's conscience ain't got no sense, and just goes for him
anyway. If I had a yaller dog that didn't know no more than a person's
conscience does, I would pison him. It takes up more room than all the rest of a
person's insides, and yet ain't no good, nohow. Tom Sawyer he says the same.
 

                                 Chapter XXXIV

We stopped talking, and got to thinking.
    By-and-by Tom says:
    »Looky here, Huck, what fools we are, to not think of it before! I bet I
know where Jim is.«
    »No! Where?«
    »In that hut down by the ash-hopper. Why, looky here. When we was at dinner,
didn't you see a nigger man go in there with some vittles?«
    »Yes.«
    »What did you think the vittles was for?«
    »For a dog.«
    »So'd I. Well, it wasn't for a dog.«
    »Why?«
    »Because part of it was watermelon.«
    »So it was - I noticed it. Well, it does beat all, that I never thought
about a dog not eating watermelon. It shows how a body can see and don't see at
the same time.«
    »Well, the nigger unlocked the padlock when he went in, and he locked it
again when he come out. He fetched uncle a key, about the time we got up from
table - same key, I bet. Watermelon shows man, lock shows prisoner; and it ain't
likely there's two prisoners on such a little plantation, and where the people's
all so kind and good. Jim's the prisoner. All right - I'm glad we found it out
detective fashion; I wouldn't give shucks for any other way. Now you work your
mind and study out a plan to steal Jim, and I will study out one, too; and we'll
take the one we like the best.«
    What a head for just a boy to have! If I had Tom Sawyer's head, I wouldn't
trade it off to be a duke, nor mate of a steamboat, nor clown in a circus, nor
nothing I can think of. I went to thinking out a plan, but only just to be doing
something; I knowed very well where the right plan was