"To my astonishment I found it almost as easy as Xenophon; and only a master mind could, in the fourth century, have written so deeply on a subject with such classical simplicity"

This is how CS Lewis describes Athanasius' On the Incarnation. He proceeds to say that Athanasius' "approach to the Miracles is badly needed today, for it is the final answer to those who object to them as arbitrary and meaningless violations of the laws of Nature".

Please find here a pdf file of CS Lewis' complete Preface to Athanasius' On the Incarnation.