There are many possible causes of that inequality which we may so frequently observe in the performances of the same man, from the influence of which no ability or industry is sufficiently secured, and which have so often sullied the splendour of genius, that the wit, as well as the conqueror, may be properly cautioned not to indulge his pride with too early triumphs, but to defer to the end of life his estimate of happiness. _------Ultima semper_ _Expectanda dies homini, dicique beatus_ _Ante obitum nemo supremaque funera debet._ OVID, Met. iii. 135. But no frail man, however great or high, Can be concluded blest before he die. ADDISON. Among the motives that urge an author to undertakings by which his reputation is impaired, one of the most frequent must be mentioned with tenderness, because it is not to be counted among his follies, but his miseries. It very often happens that the works of learning or of wit are performed at the direction of those by whom they are to be rewarded; the writer has not always the choice of his subject, but is compelled to accept any task which is thrown before him without much consideration of his own convenience, and without time to prepare himself by previous studies. Miscarriages of this kind are likewise frequently the consequence of that acquaintance with the great, which is generally considered as one of the chief privileges of literature and genius. A man who has once learned to think himself exalted by familiarity with those whom nothing but their birth, or their fortunes, or such stations as are seldom gained by moral excellence, set above him, will not be long without submitting his understanding to their conduct; he will suffer them to prescribe the course of his studies, and employ him for their own purposes either of diversion or interest, His desire of pleasing those whose favour he has weakly made necessary to himself, will not suffer him always to consider how little he is qualified for the work imposed. Either his vanity will tempt him to conceal his deficiencies, or that cowardice, which always encroaches fast upon such as spend their lives in the company of persons higher than themselves, will not leave him resolution to assert the liberty of choice. But, though we suppose that a man by his fortune can avoid the necessity of dependance, and by his spirit can repel the usurpations of patronage, yet he may easily, by writing long, happen to write ill. There is a general succession of events in which contraries are produced by periodical vicissitudes; labour and care are rewarded with success, success produces confidence, confidence relaxes industry, and negligence ruins that reputation which accuracy had raised.