Abstract

Jan Swammerdam was one of the first scientists to do biological research on the basis of physico‐theology. He was a very religious man and thought that by studying the secrets of nature he could best serve the Almighty God. He saw his life's work in demostrating the importance of God in the world of the smallest animals. The most important works of Swammerdam refer to the world of the insects and other lower animals, which he called the „legions of the God of Israel”︁, through which God tells mankind to recognize their sins, to desist from them and to honour him with greater humility. „The miracles of nature”︁ he said „are an open bible, which everywhere points to God as its eternal origin.”︁ This is one of the reasons for the title of the work Biblia naturae. It was Swammerdam's declared aim to demonstrate that the insects were no less perfect than the higher animals. Therefore, he tried to refute all three arguments used by his contemporaries to show up the difference between the higher animals and the insects: 1. insects were believed to have no inner anatomy; 2. they were thought to originate by spontanous generation; 3. development occurred through „metamorphosis”︁. Swammerdam succeeded in refuting all three arguments by exact studies of the nature and development of the insects. Most important for him was his aim to demonstrate that even the structure and the development of the smallest of animals demonstrate that they could only be made by God himself. Science as God's worship must be strictly objective, he said, because only than could one understand the laws of nature and in this way the real nature of God himself.