Cassiodorus Quote

Grammar is the mistress of words, the embellisher of the human race; through the practice of the noble reading of ancient authors, she helps us, we know, by her counsels. The barbarian kings do not use her; as is well known, she remains unique to lawful rulers. For the tribes possess arms and the rest; rhetoric is found in sole obedience to the lords of the Romans.

Variae, Bk. 9, no. 21; p. 122.