The Great Agora is a metaphor--the metaphor of modern, cultivated, hurried, violent, intense, hostile, turbulent and media-dominated life. The book contains implied as well as more explicit critical/satirical approaches to ways and manners of existence that are especially pervasive in certain parts of the world today. The towerful man is another metaphor, that of the one who mindfully asks some questions from within living in the Great Agora.
That is, the towerful man is no stranger to the life of the Great Agora--he is part of it. The Great Agora is a book on human mores, ethics, and morals. That is why it speaks in more than one language--in order to more fully reflect Agoric diversity. In addition, the tower provides a view over the Great Agoras homogeneously heterogeneous whole. While the towerful man is in one way or another a distant heir of (Nietzsches) Zarathustra, not only in height but also in perspicacity, as it were, in sophia.