I know that to this day, people are confused by how at the end, spren began arriving in the East without the need for bonds. Notum, now among the most famous of honorspren, is an example. The answer is simple, however. As the lands began to think of them, and remember them, they needed less the bond of a single person to give them purchase in the Physical Realm. For the thoughts of an entire people bolstered them. —From Knights of Wind and Truth, page 46
