科技發達的今天，聖多瑪斯（St. Thomas Aquinas, 1225－1274）探討上帝存在與否的五路論證已經過時了嗎？本文採用文獻分析法，而以多瑪斯的五路（Quinque Viae, five ways）論證為範圍。本研究共分為五部分：1）五路論證的動機及目的，2）五路論證的主要內容及其難題，3）第二路論證的難題與化解，4）「哲學的上帝與宗教的上帝」的問題，5）從第二路看多瑪斯五路的時代意義。

Are the Five Ways of St. Thomas Aquinas (1225-1274) still relevant to explore whether God exists under the development of science and technology today? This study will exam the domain of the Five Ways (Quinque Viae) of St. Thomas Aquinas using the methods of documentary analysis. There are five parts in the research: 1) the motives and purposes of the Five Ways; 2) the main points and its difficulties of the Five Ways; 3) The difficulties and resolutions of the second way; 4) the problem of the approach to the ”God of philosophy and God of religion;” and 5) the meaning of Five Ways of St. Thomas in this era through the lens of the second argument.