He resolves to say no more

O my soul, keep the rest unknown!
It is too like a sound of moan
When the charnel-eyed
Pale Horse has nighed:
Yea, none shall gather what I hide!

Why load men’s minds with more to bear
That bear already ails to spare?
From now alway
Till my last day
What I discern I will not say.

Let Time roll backward if it will;
(Magians who drive the midnight quill
With brain aglow
Can see it so,)
What I have learnt no man shall know.

And if my vision range beyond
The blinkered sight of souls in bond, —
By truth made free —
I’ll let all be,
And show to no man what I see.