It is needless to ask of a saint the caste to which he belongs; for the priest, the warrior, the tradesman, and all the thirty-six castes, alike are seeking for God.

About this quote

From song I.16 of the Songs of Kabir.

Kabir (15th century) was a weaver of Benares whose songs mock every search for God outside one’s own heart; Hindus and Muslims both claimed him, and he refused both. This rendering is from Songs of Kabir, translated by Rabindranath Tagore (1915); the song number is cited with this quote.