馬丁．布伯的《我與你》一書一向被視為是開啟其「對話哲學」的代表著作。本文依循《我與你》成書背景，將此書視為是布伯對人性中宗教根源進行「哲學人類學」轉譯的嘗試。透過梳理布伯在書中所開展的語言面向，本文試圖論證，布伯的「對話哲學」如何藉由區分「說你」和「說它」言說意向結構的不同，完成其對上帝概念的哲學見證，同時說明人理解自身的可能性。

Martin Buber’s Book I and You has been regarded as the main work for his philosophy of dialogue. According to the Buber’s motivation to write it, I regard this book as Buber’s attempt to give the religious root in human nature an anthropological philosophical expression. I try to analyze the linguistic aspect in this book in order to show how the philosophy of dialogue can philosophically testify the concept of God on the basis of the essential differences in intentional structure between “Saying-You” and “Saying-It”.