During a voyage which he undertook to Sicily, he wrote his treatise on Topics, or the Art of finding Arguments on any Question. This was an abstract from Aristotle’s treatise on the same subject; and though he had neither Aristotle nor any other book to assist him, he drew it up from his memory, and finished it as he sailed along the coast of Calabria. The last (63) work composed by Cicero appears to have been his Offices, written for the use of his son, to whom it is addressed. This treatise contains a system of moral conduct, founded upon the noblest principles of human action, and recommended by arguments drawn from the purest sources of philosophy. Such are the literary productions of this extraordinary man, whose comprehensive understanding enabled him to conduct with superior ability the most abstruse disquisitions into moral and metaphysical science. Born in an age posterior to Socrates and Plato, he could not anticipate the principles inculcated by those divine philosophers, but he is justly entitled to the praise, not only of having prosecuted with unerring judgment the steps which they trod before him, but of carrying his researches to greater extent into the most difficult regions of philosophy. This too he had the merit to perform, neither in the station of a private citizen, nor in the leisure of academic retirement, but in the bustle of public life, amidst the almost constant exertions of the bar, the employment of the magistrate, the duty of the senator, and the incessant cares of the statesman; through a period likewise chequered with domestic afflictions and fatal commotions in the Republic. As a philosopher, his mind appears to have been clear, capacious, penetrating, and insatiable of knowledge. As a writer, he was endowed with every talent that could captivate either the judgment or taste. His researches were continually employed on subjects of the greatest utility to mankind, and those often such as extended beyond the narrow bounds of temporal existence. The being of a God, the immortality of the soul, a future state of rewards and punishments, and the eternal distinction of good and evil; these were in general the great objects of his philosophical enquiries, and he has placed them in a more convincing point of view than they ever were before exhibited to the pagan world. The variety and force of the arguments which he advances, the splendour of his diction, and the zeal with which he endeavours to excite the love and admiration of virtue, all conspire to place his character, as a philosophical writer, including likewise his incomparable eloquence, on the summit of human celebrity.