There is no need for this type of reiteration. Much of Craft writing and teaching discusses what technical knowledge is required to be a 'first, second or third degree initiate' or how to work a spell. However, these are simply presentations of technique. Without an understanding of what it takes to find, develop and use power, technique is just decoration. Decorating your house doesn't help if you never clean your house in the first place.
T here is power in Witchcraft.
This power is a drawing card that attracts all kinds of people with all types of motives. Finding a book, a teacher, or a mentor that is clear and honest can be a challenging task. Too many of these people have missed the point. In the quest for power, they have in turn created that which they may have been trying to escape in the first place. The only difference may be that this time they are at the top of the hierarchical pyramid.