"Is the Sophist the same as the Statesman and the Philosopher?" Such is the question raised in the _Sophist_. Six definitions are suggested, all unsatisfactory. The fixed characteristic of the Sophist is his seeming to know everything without doing so; this definition leads straight to the concept of false opinion, a thing whose object both is and is not. "That which is not" provokes an inquiry into what is, Being. Dualism, Monism, Materialism and Idealism are all discussed, the conclusion being that the Sophist is a counterfeit of the Philosopher, a wilful impostor who makes people contradict themselves by quibbling. The _Politicus_ carries on the discussion. In this dialogue we may see the dying glories of Plato's genius. In his search for the true pastor or king he separates the divine from the human leader; the true king alone has scientific knowledge superior to law and written enactments which men use when they fail to discover the real monarch. This scientific knowledge of fixed and definite principles can come only from Education. A most remarkable myth follows, which is practically the Greek version of the Fall. The state of innocence is described as preceding a decline into barbarism; a restoration can be effected only by a divine interposition and by the growth of a study of art or by the influence of society. The arts themselves are the children of a supernatural revelation. The _Timaeus_ and the long treatise the _Laws_ criticise the theories of the Republic. The former is full of world-speculations of a most difficult kind, the latter admits the weakness of the Ideal State, making concessions to inevitable human failings. Though written in an early period, the _Apology_ may form a fitting end to these dialogues. Socrates was condemned on the charge of corrupting the Athenian youth and for impiety. To most Athenians he must have been not only not different from the Sophists he was never weary of exposing, but the greatest Sophist of them all. He was unfortunate in his friends, among whom were Critias the infamous tyrant and Alcibiades who sold the great secret. The older men must have regarded with suspicion his influence over the youth in a city which seemed to be losing all its national virtues; many of them were personally aggrieved by his annoying habit of exposing their ignorance. He was given a chance of escape by acknowledging his fault and consenting to pay a small fine. Instead, he proposed for himself the greatest honour his city could give any of her benefactors, public maintenance in the town-hall. His defence contains many superb passages and is a masterpiece of gentle irony and subtle exposure of error. Its conclusion is masterly.