True eloquence is irresistible. It charms by its images of beauty, it enforces an argument by its vehement simplicity. Orators whose speeches are "full of sound and fury, signifying nothing," only prevail where truth is not understood, for knowledge and simplicity are the foundation of all true eloquence. Eloquence abounds in beautiful and natural images, sublime but simple conceptions, in passionate but plain words. Burning words appeal to the emotions as well as to the intellect; they stir the soul and touch the heart.