I learn. I have learned. I will have learned.

But when by the balance of experience it was found that the astronomer, looking to the stars, might fall into a ditch, that the inquiring philosopher might be blind in himself, and the mathematician might draw forth a straight line with a crooked heart; then lo! did proof, the overruler of opinions, make manifest, that all these are but serving sciences, which, as they have each a private end in themselves, so yet are they all directed to the highest end of the mistress knowledge, by the Greeks called [Greek], which stands, as I think, in the knowledge of a man’s self, in the ethic and politic consideration, with the end of well-doing, and not of well-knowing only:—even as the saddler’s next end is to make a good saddle, but his further end to serve a nobler faculty, which is horsemanship; so the horseman’s to soldiery; and the soldier not only to have the skill, but to perform the practice of a soldier. So that the ending end of all earthly learning being virtuous action, those skills that most serve to bring forth that have a most just title to be princes over all the rest; wherein, if we can show, the poet is worthy to have it before any other competitors.

(Philip Sidney, The Defence of Poesy)