In one of the interludes of "The Loves of the Plants", the voice of the Poet, which would seem to be Darwin's voice as well, argues that poetry is meant to appeal to the senses, particularly vision. Darwin's primary tool for accomplishing this was personification. Darwin's personifications were often based on the classical allusions embedded with Linnaeus's own naming system. However, they were not meant to conjure up images of gods or heroes; rather, the anthropomorphized images of the plants depict more ordinary images. They also stimulate the readers' imaginations to assist them in learning the material and allow Darwin to argue that the plants he is discussing are animate, living things—just like humans. Darwin's use of personification suggests that plants are more akin to humans than the reader might at first assume; his emphasis on the continuities between mankind and plantkind contributes to the evolutionary theme that runs throughout the poem.