Christopher Clavius
Jesuit mathematician and astronomer who reformed the calendar under Pope Gregory XIII and wrote the influential Commentarius in Sphaeram.
Works
Chapter I (The Six Days of Creation)
-
Verse 14: Let There Be Lights in the Firmament
— Cited via Voellus on the etymology of "hour" from the Hebrews
"from Fr. Clavius our Voellus, book I On Horology, ch. 1"
-
Verse 16: And God Made Two Great Lights
— Cited from his Sphere, ch. 1, on the size of the moon
"Fr. Clavius in his Sphere, ch. 1"
-
Verse 16: And God Made Two Great Lights
— Cited for all the astronomical calculations
"These and more things Fr. Christopher Clavius teaches in his Sphere, ch. 1."