How does Thoreau express his ideas about slavery in Walden?

Thoreau
speaks explicitly, though briefly, to
the enslavement of African Americans
in 's longest
chapter, "Economy." Thoreau was an abolitionist,

but Walden is a work more concerned with a philosophy of living for
all of
humanity. Thoreau's focus in Walden was that
"what a man thinks of
himself, that it is which determines, or rather
indicates, his fate."

Thoreau acknowledges
in Walden that "it is hard to have a
Southern overseer;
it is worse to have a Northern one; but worst of all when you are the

slave-driver of yourself." Implicit in this statement is the idea that all men,
including
slaves, must re-conceptualize themselves as independent and free
beings in their minds, no
matter their physical circumstances. Thoreau
believed that men must not only have beliefs, they
must act on their beliefs.
This idea was more explicitly stated in Thoreau's 1854 speech
"Slavery in
Massachusetts" when he said, "The law will never make men free; it is
men who
have got to make the law free."...