Herodotus 
Account of Egypt 

This book offers an amazing glimpse into how a historian thought and wrote when there was no prior example of this profession. Herodotus writes with great detail, and is always careful to point out what he saw himself vs. what he was told by others. So we have a dual insight, from reading this, into both the history of Egypt but also how someone thought about history and society 2400 years ago. (Amazon)