or of competition; and that his desires take wing by instantaneous impulse, though their flight may be invigorated, or their efforts renewed, by subsequent considerations. The gratification of curiosity rather frees us from uneasiness than confers pleasure; we are more pained by ignorance than delighted by instruction. Curiosity is the thirst of the soul; it inflames and torments us, and makes us taste every thing with joy, however otherwise insipid, by which it may be quenched.

It is evident that the earliest searchers after knowledge must have proposed knowledge only as their reward; and that Science, though perhaps the nursling of Interest, was the daughter of Curiosity: for who can believe that they who first watched the course of the stars, foresaw the use of their discoveries to the facilitation of commerce, or the mensuration of time? They were delighted with the splendour of the nocturnal skies, they found that the lights changed their places; what they admired they were anxious to understand, and in time traced their revolutions.

There are, indeed, beings in the form of men, who appear satisfied with their intellectual possessions, and seem to live without desire of enlarging their conceptions; before whom the world passes without notice, and who are equally unmoved by nature or by art.

This negligence is sometimes only the temporary effect of a predominant passion: a lover finds no inclination to travel any path, but that which leads to the habitation of his mistress; a trader can spare little attention to common occurrences, when his fortune is endangered by a storm. It is frequently the consequence of a total immersion in sensuality: