Importance of a living teacher and not only Books

 LikuteiMoharan(19:09) Everyone wonders: Why is it necessary to travel to the tzaddik to hear <ethical teachings> directly from him, when it is possible to study the ethical teachings from books? But, the truth is that there is a great advantage to visiting the tzaddik. For there is a big difference between someone who hears directly from the true tzaddik himself and between hearing something from a teacher, from a student, or seeing it inside a book. Each time it descends from level to level, becoming increasingly distant from the tzaddik. So, too, between someone who hears it directly from the tzaddik and someone who studies from a book there is an even greater difference. For the tzaddikim are, “strong warriors doing His word.” Especially when trying to understand the word of G-d in Hebrew with which the world was created and also since G-d consulted with the souls of tzadikim before He created the world Thus the tzadikm are described as doing G-d’s word In fact each time the tzadik wants to understand properly the word of G-d he first concretises it through speech and doing mitzvos.. Thus, these words came into existence and were constructed by them. This corresponds to, “Doing His word, to hear the sound of His word.” When they want to hear G-d’s’s word, they first make the word—this being “doing His word.” Then afterwards, they hear that word from G-d—this being “to hear the sound of His word.” It is with this word that G-d talks to them