There is such a colossal difference, while here [Bonn] one is a drop in the sea, there [Pforte] one was the foam that rides on the wave.
By then, he had already 'read critically' all extant Greek tragedies, including Rhesus.
[See W. M. Calder III, 'Ulrich von Wilamowitz-Moellendorf, an Unpublished Autobiography' pp. 561-577 in GRBS 12 1971 at p. 562.]