History repeats itself.

歷史往往會重演。

That is not good language which all understand not.

不是人人都懂的語言不是好語言。

We can perhaps forgive those who said the moons of Jupiter were produced by Galileo's spyglass if we recall that in his day, as for centuries before, curved glass was the popular contrivance for producing not truth but illusion, untruth;

如果我們回想一下伽利略之前幾個世紀期間，曲面鏡一直是一種用于產生幻影而不是產生真象的把戲裝置，那么我們就會原諒那些當時把伽利略觀察到的木星衛生說成是伽利略用他的小望遠鏡變出來的人們，