"Durnik needs a tower somewhere in the Vale," Belgarath was saying. "I don't see why, father," Polgara replied. "All of Aldur's disciples have towers, Pol. It's the custom." "Old customs persist --even when there's no longer any need for them." "He's going to need to study, Pol. How can he possibly study with you underfoot all the time?" She gave him a long, chilly stare. "Maybe I should rephrase that."