Philosophy is written in this grand book, the universe, which stands continually open to our gaze. But the book cannot be understood unless one first learns to comprehend the language and read the letters in which it is composed. Galileo Galilei
哲学写在这本伟大的著作《宇宙》中，它不断地向我们的凝视敞开。但是除非一个人先学会理解语言，读一读它所组成的字母，否则这本书就无法理解。伽利略（谷歌翻译仅供参考）