Originally posted by Lady's Human
The attachment of Caesar's name to the quote gives it weight which it would not otherwise have. Caesar's writings have survived well through the years, and his actual speeches are fairly well documented by Roman Historians. Without the attachment of "How do I know? For this is what I have done. And I am Caesar. " would instantly give the quote credence with someone who was familiar with Caesar but not familiar with his writing.
So I ask again - Does that make the quote less relevant?