内涵语境下替换失效问题及其解决

On the Issue of Substitution into Intensional Contexts and Its Solutions

解决内涵语境下替换失效问题的基本思路是:内涵语境下的语言表达式表达了某主体所持有的信念或愿望等心理内容,因此是带有主体标记的,它只能被带有相同主体标记的并且和它具有相同指称的表达式所替换才不会改变包含内涵语境在内的整个句子的真值,否则,真值发生改变。

This paper discusses the issue of Substitution into Intensional Contexts and its solutions which cause great attention in the fields of logic and the philosophy of language. On the basis of the comparison and analysis of the representative solutions to this issue, the author puts forward his own solution and argues for it in an attempt to offer some fresh insights into the final solution of this issue. The key point of the author＇s solution is： the expressions within intensional contexts convey the agent＇s mental contents of beliefs or wishes and thus agentively marked. They can only be substituted for other expressions that have the same agentive marks and references without changing the truth-value of the sentences that contain the intensional contexts in which they occur; otherwise, the truth-value of these sentences does change.