The author is very precise, we can see he did research deep into Europe's ancient history.He really gives an accurate idea of the Celtic People and of how they spread into Europe and Asia?! I do not agree here, they did spread, not to Asia, they are Natural from Asia and spread to Europe. When they arrived in Europe, they already had their gods, similar to the hindu ones, even the druids sat cross legged like the orientals. So, if it was like historians say, they spread to Asia, "learned" their religion and myths, and then came back to Europe with brand new ideas??? I think not, they came from Asia and spread, not the other way.Anyway, the book is excelent, I've learned quite a lot of the Celtic ways,the author is precise and non fictional.