Aristotle claimed that a dream is first established by the fact that the person is asleep when they experience it.
ˈæɹɪstˌɑːɾəl klˈeɪmd ðˌæɾə dɹˈiːm ɪz fˈɜːst ɪstˈæblɪʃt baɪ ðə fˈækt ðætðə pˈɜːsən ɪz ɐslˈiːp wɛn ðeɪ ɛkspˈiəɹɪəns ɪt.