Here's a better image
[PL 20] number of monkeys,
baboons, & all of that species chaind by the middle, grinning and
snatching at one another, but witheld by the shortness of their
chains: however I saw that they sometimes
grew numerous, and then
the weak were caught by the strong and with a grinning aspect,
first coupled with & then devourd, by
plucking off first one limb
and then another till the body was left a
helpless trunk. this
after grinning & kissing it with seeming
fondness they devourd
too; and here & there I saw one
savourily picking the flesh off
of his own tail; as the stench terribly
annoyd us both we went
into the mill, & I in my hand brought
the skeleton of a body,
which in the mill was Aristotles Analytics.
So the Angel said: thy phantasy has
imposed upon me & thou
oughtest to be ashamed.I answerd: we impose on one another, & it is but lost time
to converse with you whose works are only Analytics.
Throughout Blake's work we see a radically criticism of the religious establishment:
The Little Vagabond
But if at the Church they would give us some Ale.
And a pleasant fire, our souls to regale;
We'd sing and we'd pray, all the live-long day;
Nor ever once wish from the Church to stray,
Then the Parson might preach & drink & sing.
And we'd be as happy as birds in the spring:
And modest dame Lurch, who is always at Church,
Would not have bandy children nor fasting nor birch.
And God like a father rejoicing to see,
His children as pleasant and happy as he:
Would have no more quarrel with the Devil or the Barrel
But kiss him & give him both drink and apparel.
I wander thro' each charter'd street,
Near where the charter'd Thames does flow.
And mark in every face I meet
Marks of weakness, marks of woe.
In every cry of every Man,
In every Infants cry of fear,
In every voice: in every ban,
The mind-forg'd manacles I hear
How the Chimney-sweepers cry
Every blackning Church appalls,
And the hapless Soldiers sigh
Runs in blood down Palace walls
And many other poems
The picture at the bottom is a serpent, his mouth wide open pointing up, or maybe Leviathan, very suitable for the tone of this text.