What the eye sees

William Blake, from Visions of the Last Judgement:

The Last Judgment is an Overwhelming of Bad Art & Science. Mental Things are alone Real; what is Calld Corporeal Nobody Knows of its dwelling Place; it is in Fallacy & its Existence an Imposture. Where is the Existence Out of Mind or Thought? Where is it but in the Mind of a Fool? Some People flatter themselves that there will be No Last Judgment, & [P 95] that Bad Art will be adopted & mixed with Good Art, That Error or Experiment will make a Part of Truth, & they Boast that it is its Foundation. These People flatter themselves; I will not Flatter them. Error is Created; Truth is Eternal. Error or Creation will be Burned Up, & then & not till then Truth or Eternity will appear. It is Burnt up the Moment Men cease to behold it. I assert for My self that I do not behold the Outward Creation & that to me it is hindrance & not Action; it is as the Dirt upon my feet, No part of Me. “What,” it will be Questioned, “When the Sun rises, do you not see a round Disk of fire somewhat like a Guinea?” O no no, I see an Innumerable company of the Heavenly host crying “Holy Holy Holy is the Lord God Almighty.” I question not my
Corporeal or Vegetative Eye any more than I would Question a Window concerning a Sight: I look thro it & not with it.

 Blake, from Milton:

The Sky is an immortal Tent built by the Sons of Los:
And every Space that a Man views around his dwelling-place,
Standing on his own roof, or in his garden on a mount
Of twenty-five cubits in height, such space is his Universe:
And on its verge the Sun rises & sets, the Clouds bow
To meet the flat Earth & the Sea in such an order'd space:
The Starry heavens reach no further, but here bend and set
On all sides, & the two Poles turn on their valves of gold
And if he move his dwelling-place, his heavens also move
Wher'eer he goes & all his neighbourhood bewail his loss
Such are the Spaces called Earth & such its dimension.
As to that false appearance which appears to the reasoner
As of a Globe rolling thro' Voidness, it is a delusion of Ulro.
 The Microscope knows not of this nor the Telescope: they alter
The ratio of the Spectator's Organs but leave Objects untouch'd.
For every Space larger than a red Globule of Man's blood,
Is visionary, and is created by the Hammer of Los:
And every Space smaller than a Globule of Man's blood opens
Into Eternity of which this vegetable Earth is but a shadow:
The red Globule is the unwearied Sun by Los created
To measure Time and Space to mortal Men every morning.
Bowlahoola & Allamanda are placed on each side
Of that Pulsation & that Globule, terrible their power.

 I am not exactly sure what Blake means by all this.  I am halfway through Milton, and it is a very challenging work.  What I do know is that Blake sees what I wish I could see.  His vision is immense.  As I read I stand at the edge of an expanse straining my eyes to see what it contains.  Randomly I catch glimpses of a glimmering light.  I must strengthen my inward eye.