What does Donna Tartt say about language?

"The assignment was a two-page essay, in Greek, on any epigram of Callimachus that we chose. I'd done only a page and I started to hurry through the rest in impatient and slightly dishonest fashion, writing out the English and translating word by word. It was something Julian asked us not to do. The value of Greek prose composition, he said was not that it gave one any particular facility in the language that could not be gained as easily by other methods but that if done properly, off the top of one's head, it taught one to think in Greek. One's thought patterns become different, he said, when forced into the confines of a rigid and unfamiliar tongue. Certain common ideas become inexpressible; other, previously undreamt-of ones spring to life, finding miraculous new articulation. By necessity, I suppose, it is diffult for me to explain in English exactly what I mean. I can only say that an incendium is in its nature entirely different from the feu with which a Frenchman lights his cigarette, and both are very different from the stark, inhuman pur that the Greeks knew, the pur that roared from the towers of Ilion or leapt and screamed on that desolate, windy beach, from the funeral pyre of Patroklos.
Pur: that one word contains for me the secret, the bright, terrible clarity of ancient Greek. How can I make you see it, this strange harsh light which pervades Homer's landscapes and illumines the dialogues of Plato, an alien light, inarticulable in our common tongue? Our shared language is a language of the intricate, the peculiar, the home of pumpkins and ragamuffins and bodkins and beer, the tongue of Ahab and Falstaff and Mrs. Gamp; and while I find it entirely suitable for reflections such as these, it fails me utterly when I attempt to describe in it what I love about Greek, that language innocent of all quirks and cranks; a language obsessed with action, and with the joy of seeing action multiply from actin, action marching relentlessly ahead and with yet more actions filing in from either side to fall into neat step at the rear, in a long straight rank of cause and effect toward what will be inevitable, the only possible end."