God gives to us these secrets, one by one; He reveals them; Satan hides them. In the 19th century a scientist (of sorts) bewailed the fact that everything had now been invented-- with none of the secrets of Nature unknown. Little did he know!
Blake readily found important secrets in his Bible sources (search for Samson).
In Visions of the Daughters of Albion Blake gave us many secrets.
Here we have Albion's Secret in Plate 13 of America:
"The British soldiers thro' the thirteen states sent up a howl
Of anguish: threw their swords & muskets to the earth & ran
From their encampments and dark castles seeking where to hide
From the grim flames; and from the visions of Orc; in sight
Of Albions Angel; who enrag'd his secret clouds open'd
From north to south, and burnt outstretchd on wings of wrath cov'ring
The eastern sky, spreading his awful wings across the heavens;"
In Songs of Experience Blake tell us of a secret:
The SICK ROSE
"O Rose thou art sick.
The invisible worm,
hat flies in the night
In the howling storm:
Has found out thy bed
Of crimson joy:
And his dark secret love
Does thy life destroy."
In Night 7 of The Four Zoas (Erdman 358) The Shadow of Enitharmon answers the Spectre of Urthona:
"now listen I will tell
Thee Secrets of Eternity which neer before unlockd
My golden lips nor took the bar from Enitharmons breast
Among the Flowers of Beulah walkd the Eternal Man & Saw
Vala the lilly of the desart. melting in high noon
Upon her bosom in sweet bliss he faintedWonder siezd All heaven they saw him dark.they built a golden wall Round Beulah"These and many other of the secrets of Life came to Blake throughhis sources (in the Bible and in many other places. Blake neverplainly described the one Secret of Life revealed to him in hisvisit to the Truchsession Gallery (which you have seen me describe[in Letter 51, to Hayley):
"Suddenly, on the day after visiting the Truchsessian Gallery of
pictures, I was again enlightened with the light I enjoyed in my youth,
and which has for exactly twenty years been closed from me as by a door
and by window-shutters."Here's a secret for you, dear reader:
Count your blessings