The World of Falsehood, the Mother of Evil and the Sons of Darkness Book II, canto xiii

It chilled the heavens with the menace of a face.
A nameless Power, a shadowy Will arose
Immense and alien to our universe.
In the inconceivable Purpose none can gauge
A vast Non-Being robed itself with shape,
The boundless Nescience of the unconscious depths
Covered eternity with nothingness.
A seeking Mind replaced the seeing Soul:
Life grew into a huge and hungry death,
The Spirit's bliss was changed to cosmic pain.
Assuring God's self-cowled neutrality
A mighty opposition conquered Space.
A sovereign ruling falsehood, death and grief,
It pressed its fierce hegemony on the earth;
Disharmonising the original style
Of the architecture of her fate's design,
It falsified the primal cosmic Will
And bound to struggle and dread vicissitudes
The long slow process of the patient Power.
Implanting error in the stuff of things
It made an Ignorance of the all-wise Law;
It baffled the sure touch of life's hid sense,
Kept dumb the intuitive guide in Matter's sleep,
Deformed the insect's instinct and the brute's,
Disfigured man's thought-born humanity.
A shadow fell across the simple Ray:
Obscured was the Truth-light in the cavern heart
That burns unwitnessed in the altar crypt
Behind the still velamen's secrecy
Companioning the Godhead of the shrine.
Thus was the dire antagonist Energy born
Who mimes the eternal Mother's mighty shape
And mocks her luminous infinity
With a grey distorted silhouette in the Night.
Arresting the passion of the climbing soul,
She forced on life a slow and faltering pace;

A vast Non-Being robed itself with shape,

The boundless Nescience of the unconscious depths

What is the cause of all these suffering, falsehood and pain? It is the Non-Being who lives in the unconscious depths of Nescience in matter. 

"The Spirit's bliss was changed to cosmic pain", a profound statement about the condition of sorrow and pain on earth.

"A seeking Mind replaced the seeing Soul"

The mind in ignorance sought to find the truth as the blind leads the blind. In the darkness it needs the help of the guide. The hidden guide is the innermost soul ineffable and intangible. The mind does not have the map to the destination. It tries but has not the clue for directions.

Arresting the passion of the climbing soul,

She forced on life a slow and faltering pace;

Man struggles to know the purpose of life where bliss is not his ordinary condition. To be happy he has to do something exciting. But the ignorance prevents his soul's ambition to know itself and progress and relegates him to suffering.The progress if possible is faltering and slow.