Or Milton’s “equal poise of hope and fear”? Or Blake’s “fearful symmetry”? 

Which is more inexpressible, the beautiful or the terrifying? Gerard Manley Hopkins, in his last, troubled sonnets, cries out, “O which one? is it each one?” Lorca says, 

The poet who embarks on the creation of the poem (as I know by experience), begins with the aimless sensation of a hunter about to embark on a night hunt through the remotest of forests. Unaccountable dread stirs in his heart. 

And Edmond Jabès, in The Book of Questions: “If you bend over your page...and do not suddenly tremble with fear, throw away your pen. Your writing would have little value.”

"The fear of the Lord is the beginning of wisdom." (Proverbs 1:7)

A translation of the original Hebrew could also be rendered as: "Being astonished by what exists is the best part of perception."

Writing has particular worth when it helps the writer or reader more fully notice (perhaps discern, but at least notice) the wealth of reality.