「温故而知新」
“Warm up the old and thereby know the new”
温习旧学才能知道新意。反对一次性消费知识。内容站本身就是「温故」：经典反复读出新应用。
Review enables insight. A content site’s job: return to classics until new applications appear.
Book of Songs
Idiom
Daodejing
Previous
民无信不立