There are no more than these three genders in any of the languages with which I am acquainted; that is to say, the formation of nouns substantive, can, by itself, and without the accompaniment of adjectives, express no other qualities but those three above-mentioned, the qualities of male, of female, of neither male nor female. I should not, however, be surprised, if, in other languages with which I am unacquainted, the different formations of nouns substantive should be capable of expressing many other different qualities. The different diminutives of the Italian, and of some other languages, do, in reality, sometimes, express a great variety of different modifications in the substances denoted by those nouns which undergo such variations. It was impossible, however, that nouns substantive could, without losing altogether their original form, undergo so great a number of variations, as would be sufficient to express that almost infinite variety of qualities, by which it might, upon different occasions, be necessary to specify and distinguish them. Though the different formation of nouns substantive, therefore, might, for some time, forestall the necessity of inventing nouns adjective, it was impossible that this necessity could be forestalled altogether. When nouns adjective came to be invented, it was natural that they should be formed with some similarity to the substantives, to which they were to serve as epithets or qualifications. Men would naturally give them the same terminations with the substantives to which they were first applied, and from that love of similarity of sound, from that delight in the returns of the same syllables, which is in the foundation of analogy in all languages, they would be apt to vary the termination of the same adjective, according as they had occasion to apply it to a masculine, to a feminine, or to a neutral substantive. They would say, _magnus lupus_, _magna lupa_, _magnum pratum_, when they meant to express a great he wolf, a great _she wolf_, a great _meadow_.