Advice of Chögyal Namkhai Norbu

"If you want to have an understanding of Dzogchen, then we need the original books. And particularly, if in the future you want to teach and keep that transmission, you must study and apply the original texts. 

It is not sufficient that you follow a teacher and listen what he says, although that might be good for you if you practice, for your realization. 

However, if you are a practitioner, you must also think about tomorrow and of other people. In fact, when we do practice we say from the beginning that we practice to benefit all beings. 

But how do we benefit them if we don't teach and do not preserve the Teachings for the future? 

So that's why we also need to know about the original books of Dzogchen. 

That is very important."