At such times, under an abated sun; afloat all day upon smooth, slow heaving swells; seated in his boat, light as a birch canoe; and so sociably mixing with the soft waves themselves, that like hearth-stone cats they purr against the gunwale; these are the times of dreamy quietude, when beholding the tranquil beauty and brilliancy of the ocean's skin, one forgets the tiger heart that pants beneath it; and would not willingly remember, that this velvet paw but conceals a remorseless fang.
Herman Melville, Moby-Dick or, The Whale
ocean, peace, threat