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.
Whoever knows he is deep tries to be clear, but whoever wants to seem deep to the crowd tries to be obscure. For the crowd supposes that anything it cannot see to the bottom must be deep: it is so timid and goes so unwillingly into the water.