我们不能选择自己的心。我们不能让自己想要对我们或对别人有益的东西。

所谓意念诚实，就是说不要自己欺骗自己，像厌恶难闻气味那样厌恶邪恶，像喜爱美丽的女子一样喜爱善良，这样才能说心安理得，所以君子在一个人独处时必定要谨慎。

做出伟大工作的唯一方法就是热爱你所做的事情。

安全总是过度的，直到它不够为止。

Every problem in mathematics is an opportunity to learn something new.

法律不仅仅是主权者的任意命令，而是根植于人民的共同意识中。

There is no such thing as a small life—only small perspectives.

I do not know what I may appear to the world， but to myself I seem to have been only like a boy playing on the sea-shore， and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary， whilst the great ocean of truth lay all undiscovered before me.