由于说话的人不同，那么人们心中的看法就变化了。“智子疑邻”，地位不同，关系不同，时间不对，需谨言慎行。

可是我想念你，珍妮。如果你想要什么，我就在你身边。

快乐的最好方式是跟随你的心。

The history of philosophy is not, like the history of the sciences, to be considered as a mere chronological record of discoveries and errors. It is the history of the human spirit in its endeavor to understand itself and its relation to the universe.

Mathematics is the language in which the universe is written.

数学不是观赏性运动——你必须参与其中才能欣赏它的美。