把无知视为对自由的限制，理由在于它使人做出若看清后果便不会做出的选择。
The ground for taking ignorance to be restrictive of freedom is that it causes people to make choices they would not have made had they seen what their choices involved.
一旦我们决定行动而非被动反应，可能性就无穷无尽。
The past is never truly past until it has been fully understood.
幸福的秘诀是：尽量扩大你的兴趣范围，对感兴趣的人和物尽可能友善。