From number 720, in the Krailsheimer edition:
Ethics and language are particular, but also universal, branches of knowledge.
In this illuminating insight the great Pascal anticipates moral philosophers and evolutionary biologists such as John Rawls and Marc Hauser by over 300 years. As homo sapiens we all share an innate moral faculty and finite ethical grammar, just as we do for language — but also like language, the particulars of its instantiation varies, within elastic limits, from culture to culture.