1.2 comparing literatures
Cesar and the Druids
Exercise n°1 page 4

How did the Druids differ from the military class?
The Druids were members of the priestly class that's why they didn't go to war and didn't pay tribute. Many people embraced this professions of their own accord and many were sent to it by their parents. They were mediators, scientists and doctors and employed in administrative jobs.

How long did they study?
They had to learn by heart a great number of verses that's why they had been studying for twenty years before coming druid. What's more they had to memorize verses because they regarded it awful to commit these to writing. They had to study also theology, cosmology, and also astronomy.

Why did they write in Greek?
Because Greek was the characters that was used in their public and private transactions. We understand the Celts were in contact with other civilizations (“scambi culturali”); maybe they were in contact with Magna Grecia.

What was their belief about souls?
They may have been influenced by Pythagorean philosophy.
They believed souls didn't become extinct but pass after death from one body to another: reincarnation. 
There was a kind of life-cycle.

What did they teach the young?
They taught the young to respect the stars and their motion, to respect the extent of the world and of our earth, to respect the nature things, to respect the power and the majesty of the immortal gods.