Moby Dick by Herman Melville Chapter 85 Page 10

But why pester one with all this reasoning on the subject? Speak out! You have seen him spout; then declare what the spout is; can you not tell water from air? My dear sir, in this world it is not so easy to settle these plain things. I have ever found your plain things the knottiest of all. And as for this whale spout, you might almost stand in it, and yet be undecided as to what it is precisely.

The central body of it is hidden in the snowy sparkling mist enveloping it; and how can you certainly tell whether any water falls from it, when, always, when you are close enough to a whale to get a close view of his spout, he is in a prodigious commotion, the water cascading all around him. And if at such times you should think that you really perceived drops of moisture in the spout, how do you know that they are not merely