撰写一生就像拼凑一幅马赛克，其中一些碎片不可避免地缺失了。
To write a life is to assemble a mosaic where some pieces are inevitably missing.
真正的历史学家是真理的战士。
每个时代的统治思想总是统治阶级的思想。
过去并非直线，而是错综复杂的网。
"You can never know everything, and part of what you know is always wrong."