Live in the world like a waterfowl. The water clings to the bird, but the bird shakes it off. Live in the world like a mudfish. The fish lives in the mud, but its skin is always bright and shiny.
So a military force has no constant formation, water has no constant shape: the ability to gain victory by changing and adapting according to the opponent is called genius.
There is no room for the impurities of literature in an essay.... the essay must be pure--pure like water or pure like wine, but pure from dullness, deadness, and deposits of extraneous matter.
People look like rivers very much: water is everywhere the same, but the rivers are narrow, fast, wide, pure, cold, muddy and warm. The people are the same. They have the rudiment of every human habit in them and they behave according to them. Sometimes they even do not look like themselves, but they still stay whatever they are.
If a writer of prose knows enough about what he is writing about he may omit things that he knows and the reader, if the writer is writing truly enough, will have a feeling of those things as strongly as though the writer had stated them. The dignity of movement of an iceberg is due to only one-eighth of it being above water. A writer who omits things because he does not know them only makes hollow places in his writing.