IF every day did not produce fresh instances of the ingratitude of mankind, we might, perhaps, be at a loss, why so liberal and impartial a benefactor as sleep, should meet with so few historians or panegyrists. Writers are so totally absorbed by the business of the day, as never to turn their attention to that power, whose officious hand so seasonably suspends the burthen of life; and without whose interposition man would not be able to endure the fatigue of labour, however rewarded, or the struggle with opposition, however successful. Night, though she divides to many the longest part of life, and to almost all the most innocent and happy, is yet unthankfully neglected, except by those who pervert her gifts. The astronomers, indeed, expect her with impatience, and felicitate themselves upon her arrival: Fontenelle has not failed to celebrate her praises; and to chide the sun for hiding from his view the worlds, which he imagines to appear in every constellation. Nor have the poets been always deficient in her praises: Milton has observed of the night, that it is "the pleasant time, the cool, the silent." These men may, indeed, well be expected to pay particular homage to night; since they are indebted to her, not only for cessation of pain, but increase of pleasure; not only for slumber, but for knowledge. But the greater part of her avowed votaries are the sons of luxury; who appropriate to festivity the hours designed for rest; who consider the reign of pleasure as commencing when day begins to withdraw her busy multitudes, and ceases to dissipate attention by intrusive and unwelcome variety; who begin to awake to joy when the rest of the world sinks into insensibility; and revel in the soft affluence of flattering and artifical lights, which "more shadowy set off the face of things." Without touching upon the fatal consequences of a custom, which, as Ramazzini observes, will be for ever condemned and for ever retained; it may be observed, that however sleep may be put off from time to time, yet the demand is of so importunate a nature, as not to remain long unsatisfied: and if, as some have done, we consider it as the tax of life, we cannot but observe it as a tax that must be paid, unless we could cease to be men; for Alexander declared, that nothing convinced him that he was not a divinity, but his not being able to live without sleep. To live without sleep in our present fluctuating state, however desirably it might seem to the lady in Clelia, can surely be the wish only of the young or the ignorant; to every one else, a perpetual vigil will appear to be a state of wretchedness, second only to that of the miserable beings, whom Swift has in his travels so elegantly described, as "supremely cursed with immortality."