Hermeticism is the high art of magic, and thus the counterpart to sorcery. Mages, the gifted of Hermeticism, are usually respected people and have undergone a long training. Hermeticism assumes that magic can be mastered in any form, and so the spells of Hermeticism are taught in academies and written down in books.
Hermeticists are generally able to analyze and ultimately master any spell, regardless of its alignment. Depending on the direction and complexity, this is preceded by an intensive study of the respective spell and can last from a few weeks to months to a lifetime's work. The work of the hermeticist is always based on a strictly scientific approach, which also explains why shamanistic spells in particular, for example, cause him extreme difficulties and sometimes literally drive him mad.