This paper aims to investigate how Ammons internalizes the facts and realities of nature into his mind. He appears as a poet of mind as well as a poet of nature in his works. Much of Ammons` poetry is based on his scientific observations and awareness of the natural world. His poems, therefore, include many objective descriptions of its facts and the descriptions often become a poetic discourse itself in his works. Ammons, however, makes use of the observations and awareness to discover and reveal correspondences between nature and the human mind or between scientific facts and moral truths. Thus, the observations of nature are internalized in the process of contemplation to build terrains for the human mind. Ammons always moves beyond the merely factual to contemplate some greater truth. For him, the truth points to the laws of nature or nature`s organic orders and process. This truth or fact is what he wants to learn from nature to dismantle the closed human thought or rigidity in thought and perception. In addition, the scientific realities serve as a medium for imagination and are transformed into a metaphor for humans` internal experiences. In other words, Ammons transforms the facts of science into the testimony of his poetry.