Authors:

Shall any gazer see with mortal eyes, Or any searcher know by mortal mind; Veil upon veil will lift but there must be Veil upon veil behind.

Various, Helmuth von Glasenapp, Nyanamoli Thera, Nyanaponika Thera, Acarya Buddharakkhita (2008). “Collected Wheel Publications Volume II: Numbers 16–30”, p.399, Buddhist Publication Society
Shall any gazer see with mortal eyes, Or any searcher know by mortal mind; Veil upon veil will lift but there must be Veil upon veil behind.