When the sea hisses, it speaks, and speech breaks the spell of terror; when it is inert, heaving noiselessly, it is dumb, and seems to brood over mischief. The ocean in a calm is like a sulky giant; one dreads that it may be meditating evil. Moreover, an angry sea looks less vast in extent than a calm one. Its mounting waves bring the horizon nearer, and one does not discern how for many leagues the pitiless billows repeat themselves. To appreciate the hideous vastness of the ocean one must see it when it sleeps.