Owing to their extreme generality, these words could easily be extended to all sorts of objects which they did not originally include; it is even this extreme suppleness which has permitted them to give birth to the numerous words which are derived from them. Then when men, turning towards things, undertook to name them, that they might be able to think about them, they applied these words to them, though they were in no way designed for them. But, owing to their origin, these were able to designate the forces of nature only by means of their manifestations which seemed the nearest to human actions: a thunderbolt was called _something_ that tears up the soil or that spreads fire; the wind, _something_ that sighs or whistles; the sun, _something_ that throws golden arrows across space; a river, _something_ that flows, etc. But since natural phenomena were thus compared to human acts, this _something_ to which they were attached was necessarily conceived under the form of personal agents, more or less like men. It was only a metaphor, but it was taken literally; the error was inevitable, for science, which alone could dispel the illusion, did not yet exist. In a word, since language was made of human elements, translating human states, it could not be applied to nature without transforming it.[155] Even to-day, remarks M. Bréal, it forces us in a certain measure to represent things from this angle. "We do not express an idea, even one designating a simple quality, without giving it a gender, that is to say, a sex; we cannot speak of an object, even though it be considered in a most general fashion, without determining it by an article; every subject of a sentence is presented as an active being, every idea as an action, and every action, be it transitory or permanent, is limited in its duration by the tense in which we put the verb."[156] Our scientific training enables us to rectify the errors which language might thus suggest to us; but the influence of the word ought to be all-powerful when it has no check. Language thus superimposes upon the material world, such as it is revealed to our senses, a new world, composed wholly of spiritual beings which it has created out of nothing and which have been considered as the causes determining physical phenomena ever since.