The past is always changing, because we are always changing our relationship to it.
过去总在变化，因为我们与它的关系总在改变。
"A book is a fragile creature, it suffers the wear of time, it fears rodents, the elements and clumsy hands. So the librarian protects the books not only against mankind but also against nature and devotes his life to this war with the forces of oblivion."
承认规则作为一种社会事实存在。