本文主要論點為：一、刑法詐謗罪所保護的法益為名譽及隱私；二、刑法誹謗罪條文及立法理由明文建立了言論責任二元管制模式；三、二元管制模式對於各種言論提供了適當保障水準，並能合理兼顧人民名譽及隱私法益；四、在理論上，言論可被視為言論市場中的產品，二元管制模式對於瑕疵言論採取了適當的產品責任標準。

The key points of this article are: 1. The libel rules in the Code of Criminal law in fact protect reputation and privacy. 2. Such rules establish a dualistic regulation model that imposes different liability standards upon two categories of speech. 3. This regulation model can reasonably balance the conflicting interests between the freedom of speech and people’s reputation and privacy. 4. Speech can be theoretically treated as a kind of product or commodity, and the dualistic regulation model adopts reasonable standards of liability.