法律体系的存在取决于官员对次要规则的接受。
The existence of a legal system depends on the acceptance of secondary rules by officials.
It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.
大胆梦想，努力工作，保持专注，与优秀的人为伍。
We need to think about how to make computers work for us in ways that are more intuitive and natural.
语言是唯一的家园。
概率既由我们观察的性质决定，也由我们的理性观念决定。
我根本不是一个思维敏捷的人。我必须花很多时间才能理解一些东西。