Chapter 30

For that matter, why is one sea so different from another? You measure the amount of salt, the weight of the water, the strength of the wind. Though you had all the factors we can measure, these three and a score of others (the pressure of the air, its wetness, its heat, and so on), yet you could never say why the difference between one sea and another appears. All measurable factors might be the same, and yet the seas quite different. You can, indeed, hardly describe that difference any more than you can describe …