_Imagination_ is the faculty of combining with promptitude ideas or images; it consists in the power man possesses of re-producing with ease the modifications of his brain: of connecting them, of attaching them to the objects to which they are suitable. When imagination does this, it gives pleasure; its fictions are approved, it embellishes Nature, it is a proof of the soundness of the mind, it aids truth: when on the contrary, it combines ideas, not formed to associate themselves with each other--when it paints nothing but disagreeable phantoms, it disgusts, its fictions are censured, it distorts Nature, it advocates falsehood, it is the proof of a disordered, of a deranged mind: thus poetry, calculated to render Nature more pathetic, more touching, pleases when it creates ideal beings, but which move us agreeably: we, therefore, forgive the illusions it has held forth, on account of the pleasure we have reaped from them. The hideous chimeras of superstition displease, because they are nothing more than the productions of a distempered imagination, that can only awaken the most afflicting sensations, fills us with the most disagreeable ideas. Imagination, when it wanders, produces fanaticism, superstitious terrors, inconsiderate zeal, phrenzy, and the most enormous crimes: when it is well regulated, it gives birth to a strong predilection for useful objects, an energetic passion for virtue, an enthusiastic love of our country, and the most ardent friendship: the man who is divested of imagination, is commonly one in whose torpid constitution phlegm predominates over the igneous fluid, over that sacred fire, which is the great principle of his mobility, of that warmth of sentiment, which vivifies all his intellectual faculties. There must be enthusiasm for transcendent virtues as well as for atrocious crimes; enthusiasm places the soul in a state similar to that of drunkenness; both the one and the other excite in man that rapidity of motion which is approved, when good results, when its effects are beneficial; but which is censured, is called folly, delirium, crime, fury; when it produces nothing but disorder and confusion.