A key figure in the relatively quiet period from 1906 to 1953 was Rudolf Bultmann, who was skeptical regarding the relevance and necessity of historical Jesus research and argued that the only thing we can or need to know about Jesus is the "thatness" (German: Dass) of his existence and very little else.
在1906年到1953年这个相对平静的时期中出现一个关键人物，鲁道夫·布尔特曼，他对历史中的耶稣的研究的重要性和必要性持怀疑态度，并认为我们唯一能够或需要知道的关于耶稣的东西就是他“如此”（德语：Dass）地存在，而不是别的什么东西。