To investigate any topic properly, we should exploit all the evidence bearing upon it. The study, therefore, of any period of antiquity documented both by artifacts and texts, requires the synthesis of archaeology and philology. He who would control any period of history, must master its written as well as its archaeological sources.

The growth of knowledge, and the development of new techniques, evoke more and more specialization. This has happened particularly in the study of man as a result of the masses of data that keep pouring in, during an age of discovery through exploration and excavation.