ˈælbɚt ʃˈɛntdʒˈaɪɚdʒˌɪi, hˌuː ɹˈoʊt ðˈæt "ɐ dɪskˈʌvɚɹi mˈʌst bˈiː, baɪ dˌɛfɪnˈɪʃən, æt vˈɛɹiəns wɪð ɛɡzˈɪstɪŋ nˈɑːlɪdʒ", dᵻvˈaɪdᵻd sˈaɪəntɪsts ˌɪntʊ tˈuː kˈæɾɪɡɚɹiz: ðɪ ɐpəlˈoʊniənz ænd ðə dˌaɪənˈɪʒənz.
Albert Szent-Györgyi, who wrote that "a discovery must be, by definition, at variance with existing knowledge", divided scientists into two categories: the Apollonians and the Dionysians.