Weak and delicate minds may, perhaps, be alarmed by the title of this work. The word solitude, may possibly engender melancholy ideas; but they have only to read a few pages to be undeceived. The author is not one of those extravagant misanthropists who expect that men, formed by nature for the enjoyments of society, and impelled continually towards it by a multitude of powerful and invincible propensities, should seek refuge in forests, and inhabit the dreary cave or lonely cell; he is a friend to the species, a rational philosopher, and the virtuous citizen, who, encouraged by the esteem of his sovereign, endeavors to enlighten the minds of his fellow creatures upon a subject of infinite importance to them, the attainment of true felicity.