Bonnet, in an affecting passage of the preface to his celebrated work on the Nature of the Soul, relates the manner in which solitude rendered even his defect of sight advantageous to him. “Solitude,” says he, “necessarily leads the mind to meditation. The circumstances in which I have hitherto lived, joined to the sorrows which have attended me for many years, and from which I am not yet released, induced me to seek in reflection those comforts which my unhappy condition rendered necessary; and my mind is now become my constant retreat: from the enjoyments it affords I derive pleasures which, like potent charms, dispel all my afflictions.” At this period the virtuous Bonnet was almost blind. Another excellent character, of a different kind, who devotes his time to the education of youth, Pfeffel, at Colmar, supports himself under the affliction of total blindness in a manner equally noble and affecting, by a lifeless solitary indeed, but by the opportunities of frequent leisure which he employs in the study of philosophy, the recreations of poetry, and the exercises of humanity. There was formerly in Japan a college of blind persons, who, in all probability, were endued with quicker discernment than many members of more enlightened colleges. These sightless academicians devoted their time to the study of history, poetry, and music. The most celebrated traits in the annals of their country became the subject of their muse; and the harmony of their verses could only be excelled by the melody of their music. In reflecting upon the idleness and dissipation in which a number of solitary persons pass their time, we contemplate the conduct of these blind Japanese with the highest pleasure. The _mind’s eye_ opened and afforded them ample compensation for the loss of the corporeal organ. Light, life, and joy, flowed into their minds through surrounding darkness, and blessed them with high enjoyment of tranquil thought and innocent occupation. Solitude teaches us to think, and thoughts become the principal spring of human actions; for the _actions_ of men, it is truly said, are, nothing more than their _thoughts_ embodied, and brought into substantial existence. The mind, therefore, has only to examine with candor and impartiality the idea which it feels the greatest inclination to pursue, in order to penetrate and expound the mystery of the human character; and he who has not been accustomed to self-examination, will upon such a scrutiny, frequently discover truths of extreme importance to his happiness, which the mists of worldly delusion had concealed totally from his view.