Aristotle's writings can seem to modern readers close to implying evolution, but while Aristotle was aware that new mutations or hybridizations could occur, he saw these as rare accidents.
ˈæɹɪstˌɑːɾəlz ɹˈaɪɾɪŋz kæn sˈiːm tə mˈɑːdɚn ɹˈiːdɚz klˈoʊs tʊ ɪmplˈaɪɪŋ ˌɛvəlˈuːʃən, bˌʌt wˌaɪl ˈæɹɪstˌɑːɾəl wʌz ɐwˈɛɹ ðæt nˈuː mjuːtˈeɪʃənz ɔːɹ hˌaɪbɹɪdᵻzˈeɪʃənz kʊd əkˈɜː, hiː sˈɔː ðiːz æz ɹˈɛɹ ˈæksɪdənts.