These precepts are not forgotten, either in the Sophist or in the Statesman. The Sophist contains four examples of division, carried on by regular steps, until in four different lines of descent we detect the Sophist. In the Statesman the king or statesman is discovered by a similar process; and we have a summary, probably made for the first time, of possessions appropriated by the labour of man, which are distributed into seven classes. We are warned against preferring the shorter to the longer method;--if we divide in the middle, we are most likely to light upon species; at the same time, the important remark is made, that 'a part is not to be confounded with a class.' Having discovered the genus under which the king falls, we proceed to distinguish him from the collateral species. To assist our imagination in making this separation, we require an example. The higher ideas, of which we have a dreamy knowledge, can only be represented by images taken from the external world. But, first of all, the nature of example is explained by an example. The child is taught to read by comparing the letters in words which he knows with the same letters in unknown combinations; and this is the sort of process which we are about to attempt. As a parallel to the king we select the worker in wool, and compare the art of weaving with the royal science, trying to separate either of them from the inferior classes to which they are akin. This has the incidental advantage, that weaving and the web furnish us with a figure of speech, which we can afterwards transfer to the State.