The verb "invoke" has some less-than-positive connotations in some quarters. 
(From my reading about JRRT and C.S. Lewis, this would definitely have included not a few students of the two who were faced with philology. Though it would seem to have been the students of "Lit" who had to face the strictness - the horror! the horror! - of "Lang". And among these the slackers who ran afoul of specifically Lewis, who had very little patience with their kind.)
(From my reading about JRRT and C.S. Lewis, this would definitely have included not a few students of the two who were faced with philology. Though it would seem to have been the students of "Lit" who had to face the strictness - the horror! the horror! - of "Lang". And among these the slackers who ran afoul of specifically Lewis, who had very little patience with their kind.)
