The primary function of the Platonic dialogue is not the communication of philosophical doctrines but the transformation of the reader's character. This article takes up the question of how, or by what means, the Platonic dialogue accomplishes its transformative goal. An answer is developed as follows. First, the style of reading associated with analytical philosophy is not transformative, on account of its hermeneutical attachment and epistemic equality in the relationship between reader and author. Secondly, the style of reading associated with (...) the genre of commentary is transformative because it is governed by a principle of authority. When the commentary model is applied to the Platonic dialogue, it can be seen that the dialogue mimics the function of the authority principle in transforming the reader into a commentator, that is, someone who reads from a position of detachment and accepts responsibility for himself as moral and epistemic agent. (shrink)