hɪz kˌɔɹɪlˈeɪʃən ʌv dˈɛd wɪð kˈoʊld, ɐlˈaɪv wɪð wˈɔːɹm, mˈeɪ nˌɑːɾɐv bˌɪn pɹaɪmˈɛɹᵻli ɪntˈɛndᵻd æz ɐ kˌɑːntɹɪbjˈuːʃən tə fˌɪzɪˈɑːlədʒi, jˈɛt ðə fˌɪzɪəlˈɑːdʒɪkəl sɪɡnˈɪfɪkəns ʌv ðɪs θˈɔːt wʌz pɚsˈiːvd baɪ hɪz səksˈɛsɚz; wˈɪtnəs ɛmpˈɛdɑːkəlz, hˌuː tˈɔːt slˈiːp kˈʌmz ɐbˌaʊt wɛn ðə hˈiːt ʌvðə blˈʌd ɪz kˈuːld tə ðə pɹˈɑːpɚ dᵻɡɹˈiː, dˈɛθ wɛn ɪt bɪkˌʌmz ˌɔːltəɡˈɛðɚ kˈoʊld".
His correlation of dead with cold, alive with warm, may not have been primarily intended as a contribution to physiology, yet the physiological significance of this thought was perceived by his successors; witness Empedocles, who taught 'sleep comes about when the heat of the blood is cooled to the proper degree, death when it becomes altogether cold'".