历史是在记忆的不完美与文献的不足相遇时产生的确定性。
History is that certainty produced at the point where the imperfections of memory meet the inadequacies of documentation.
我们对明天的唯一限制是我们今天的疑虑。
预测未来的最好方法就是创造未来。
对付一个不自由的世界的方法就是变得如此绝对自由，以至于你的存在本身就是一种反叛。
A philosophical problem has the form: 'I don't know my way about.'
"Mathematics is not a spectator sport."
You have to believe in yourself when no one else does.
Great companies don't just sell products; they solve problems.
Precision measurements in astronomy open new windows to understanding the universe.
人之所以比禽兽尊贵，是因为人懂得“礼”啊。后人常用这句话说明“礼”在我们生活中的重要性。讲究“礼”，是有修养、有道德的表现。