You have raised the hopes of your country by the proofs you have given of superior parts. Confirm these hopes by proofs of uncommon industry and application, and perseverance. Superior parts, nay even superior virtue, without these qualities, will be insufficient to support your character and your cause.
How many men have appeared in my time who have made these essays with success, and have made no progress afterwards? Some have dropped, from their first flights, down into the vulgar crowd, have been distinguished, nay heard of, no more! Others with better parts, perhaps with more presumption, but certainly with greater ridicule, have persisted in making these essays towards business all their lives, and have never been able to advance farther, in their political course, than a premeditated harangue on some choice subject. I never saw one of these important persons sit down after his oration, with repeated hear-hims ringing in his ears, and inward rapture glowing in his eyes, that he did not recall to my memory the story of a conceited member of some parlement in France, who was overheard, after his tedious harangue, muttering most devoutly to himself, Non nobis, Domine, non nobis, sed nomini tuo da gloriam!
Eloquence, that leads mankind by the ears, gives a nobler superiority than power that every dunce may use, or fraud that every knave may employ, to lead them by the nose. But eloquence must flow like a stream that is fed by an abundant spring, and not spout forth a little frothy water on some gaudy day, and remain dry the rest of the year. The famous orators of Greece and Rome were the statesmen and ministers of those commonwealths. The nature of their governments and the humour of those ages made elaborate orations necessary. They harangued oftener than they debated: and the ars dicendi, required more study and more exercise of mind, and of body too, among them, than are necessary among us. But as much pains as they took in learning how to conduct the stream of eloquence, they took more to enlarge the fountain from which it flowed. Hear Demosthenes, hear Cicero thunder against Philip, Catiline and Anthony. I choose the example of the first rather than that of Pericles whom he imitated, or of Phocion whom he opposed, or of any other considerable personage in Greece; and the example of Cicero rather than that of Crassus, or of Hortensius, or of any other of the great men of Rome; because the eloquence of these two has been so celebrated that we are accustomed to look upon them almost as mere orators. They were orators indeed, and no man who has a soul can read their orations, after the revolution of so many ages, after the extinction of the governments, and of the people for whom they were composed, without feeling at this hour the passions they were designed to move, and the spirit they were designed to raise. But if we look into the history of these two men, and consider the parts they acted, we shall see them in another light, and admire them in an higher sphere of action.
Demosthenes had been neglected, in his education, by the same tutors who cheated him of his inheritance. Cicero was bred with greater advantage: and Plutarch, I think, says that when he first appeared the people used to call him, by way of derision, the Greek, and the scholar. But whatever advantage of this kind the latter might have over the former, and to which of them soever you ascribe the superior genius, the progress which both of them made in every part of political knowledge, by their industry and application, was marvellous. Cicero might be a better philosopher, but Demosthenes was no less a statesman: and both of them performed actions and acquired fame, above the reach of eloquence alone. Demosthenes used to compare eloquence to a weapon, aptly enough; for eloquence, like every other weapon, is of little use to the owner, unless he have the force and the skill to use it.
This force and this skill Demosthenes had in an eminent degree. Observe them in one instance among many. It was of mighty importance to Philip to prevent the accession of Thebes to the grand alliance that Demosthenes, at the head of the Athenian commonwealth, formed against the growing power of the Macedonians.
Philip had emissaries and his ambassadors on the spot to oppose to those of Athens, and we may be assured that he neglected none of those arts upon this occasion that he employed so successfully on others. The struggle was great, but Demosthenes prevailed, and the Thebans engaged in the war against Philip. Was it by his eloquence alone that he prevailed in a divided state, over all the subtlety of intrigue, all the dexterity of negotiation, all the seduction, all the corruption, and all the terror that the ablest and most powerful prince could employ? Was Demosthenes wholly taken up with composing orations, and haranguing the people, in this remarkable crisis? He harangued them no doubt at Thebes, as well as at Athens, and in the rest of Greece, where all the great resolutions of making alliances, waging war, or concluding peace, were determined in democratical assemblies. But yet haranguing was no doubt the least part of his business, and eloquence was neither the sole, nor the principal talent, as the style of writers would induce us to believe, on which his success depended. He must have been master of other arts, subserviently to which his eloquence was employed, and must have had a thorough knowledge of his own state, and of the other states of Greece, of their dispositions, and of their interests relatively to one another, and relatively to their neighbours, to the Persians particularly, with whom he held a correspondence, not much to his honour: I say, he must have possessed an immense fund of knowledge, to make his eloquence in every case successful, and even pertinent or seasonable in some, as well as to direct it and to furnish it with matter whenever he thought proper to employ this weapon.