"an essay of Maeterlinck's on Ruysbroek"

Maurice Polydore Marie Bernard, Count Maeterlinck (1862-1949), Belgian playwright, poet, and essayist; Nobel laureate in literature (1911).

Of Ruysbroek, Maeterlinck wrote, "He knows, though he is unaware of it, the Platonism of Greece, the Sufism of Persia, the Brahmanism of India, and the Buddhism of Thibet."