The Basic Logic of Alchemy is Relationship
Between you and anything that you might wish to influence there is a relationship. If either party in a relationship changes, the relationship itself is changed. In turn, any change in the relationship changes both parties. So if you wish to change something, the first thing you must do is discover the true nature of your relationship to it. Then you will be able to see how to change it by changing yourself. This is the basic logic of alchemy.
— On Becoming an Alchemist, p. 12