His ideas pushed linguistics into a brand new stage, such as the arbitrary nature of sign, distinction of langue and parole and synchronic and diachronic linguistics.

• 他的思想将语言学推向一个崭新的阶段，这些思想有语言符号的任意性、“语言”和“言语”的区分以及“历时性”和“共时性”的区分。