Plotinos: Complete Works, v. 4 In Chronological Order,...

3. For not being beautiful this world should not be blamed; neither for not being the best of corporeal worlds; nor should the Cause, from which it derives its existence, be accused. To begin with, this world exists necessarily. It is not the work of a reflecting determination. It exists because a superior Being naturally begets it in His own likeness. Even if its creation were the result of reflective determination, it could not shame its author; for the divinity made the universe beautiful, complete and harmonious. Between the greater and lesser parts He introduced a fortunate accord. A person who would blame the totality of the world from consideration of its parts is therefore unjust. He should examine the parts in their relation to the totality, and see whether they be in accord and in harmony with it. Then the study of the whole should continue down to that of the least details. Otherwise criticism does not apply to the world as a whole, but only to some of its parts. For instance, we well know how admirable, as a whole, is man; yet we grant that there would be justification for criticism of a separate hair, or toe, or some of the vilest animals, or Thersites, as a specimen of humanity.