If you remember only one thing I've said, remember that an idea is a feat of association, and the height of it is a good metaphor. If you have never made a good metaphor, then you don't know what it's all about.
Robert FrostGATHERING LEAVES Spades take up leaves No better than spoons, And bags full of leaves Are light as balloons. I make a great noise Of rustling all day Like rabbit and deer Running away. But the mountains I raise Elude my embrace, Flowing over my arms And into my face. I may load and unload Again and again Till I fill the whole shed, And what have I then? Next to nothing for weight, And since they grew duller From contact with earth, Next to nothing for color. Next to nothing for use. But a crop is a crop, And who's to say where The harvest shall stop?
Robert Frost