I am reading Savitri by Sri Aurobindo, canto two, the issue

He brackets the theme of the book (starting point of the story around which the symbolism was built.)

"An absolute supernatural darkness falls
On man sometimes when he draws near to God
An hour arrives when fail all Nature's means
Forced out from the protecting Ignorance
And flung back on his naked primal need
He at length must cast from him his surface soul
And be the ungarbed entity within "