The first political philosopher to call himself an anarchist () was Pierre-Joseph Proudhon (1809–1865), marking the formal birth of anarchism in the mid-19th century.
ðə fˈɜːst pəlˈɪɾɪkəl fɪlˈɑːsəfɚ tə kˈɔːl hɪmsˈɛlf ɐn ˈænɑːɹkˌɪst wʌz pɪˈɛɹdʒˈoʊsəf pɹˈaʊdhɑːn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd nˈaɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti fˈaɪv, mˈɑːɹkɪŋ ðə fˈɔːɹməl bˈɜːθ ʌv ˈænɚkˌɪzəm ɪnðə mˈɪd nˈaɪntiːnθ sˈɛntʃɚɹi.