“There are seven passions in the universe, Ssrin tells her. Seven patterns which appear again and again, across species, across time and space. There are many ideas about why. She shares none of them. She only names the passions for Anna. Preyjest is the chasing passion, the hunting passion. (Her heads show Anna: one slithering up another’s neck, reaching for it with a forked tongue-tip. At the last instant the other slips away.) Prajna is the lonely passion. The need for truth. One star in the dark, trying to brighten. Caryatasis is the dream of all disciples. The passion that binds students to their teacher. It happens when one soul changes many, and many change toward the one. Geashade hurts in the end, and cannot be ended without the hurt. Hesper is the warmth of a need unexpectedly met. Generosity from a stranger. Love from a friend. It is associated with silence: things said without speaking. Rath is the passion which stole gravity’s strength. Like gravity it draws things together to clash, and leaves scars shaped like the enemy. Serendure is the last and greatest. It is the unbreakable bond which may be trust and may be dependence. It persists whether it is wanted or not. It is like the force which binds quarks together: stronger when it is pulled. Each passion, Ssrin says, is a relationship between souls. Souls are the letters that make these words.”
―
Seth Dickinson,
Exordia