The seed mantras that are in this book are the core sounds. These sounds have embedded into them the universal creative energies. They are potential power and do not have attributes such as "good" and "evil". These sounds transcend those human labels. However, it does not mean they cannot be used for both "good" and "evil". As I stated in other books, the universal energies are like electricity. They will manifest in the way they are guided. For example, plug in your computer and your lamp, and you will see they are using the same electricity, but it is manifesting differently in each object based on its intended use. If you stick your tongue in an electric socket, you will quickly learn that electricity will light you up as well.
It's the same when you use these mantras. Mantras do not have morality issues; they are not biased; they are simply energies waiting to be guided, and guide them we shall.