George Herbert Moberly, Dictionary of Christian Biography and Literature (1911)
“ He "removed the earth, widened the passages, so as to make them more serviceable for the crowd of pilgrims, constructed flights of stairs leading to the more illustrious shrines, and adorned the chambers with marbles, opening shafts to admit air and light where practicable, and supporting the friable tufa walls and galleries wherever it was necessary with arches of brick and stone work. ”
