We shall learn in all things to reach out to First Cause as operating through the channels of secondary causation,-"causa causas" as producing, and therefore controlling "causa causata"-and so we cease to worry about secondary causes.
"The Law and the Word"
Thomas Troward
Volcatius Sedigitus, an early critic, who wrote a work De Poetis, and who has already been referred to as assigning the third rank in the list of comic poets to Naevius, mentions Ennius as tenth and last, solely 'antiquitatis causa.
"The Roman Poets of the Republic"
W. Y. Sellar
Mr James Croll has recently strongly supported this opinion; and there can be no doubt that we have here a vera causa of considerable mutations of level.
"Geology"
James Geikie