Zaki al-Arsuzi
The origins of Ba'athism began with the political thought developed by Michel Aflaq, Salah al-Din al-Bitar, and Zaki al-Arsuzi. While Aflaq, Bitar and Arsuzi were never members of the same organization and formed different parties, with Aflaq and Bitar on one hand and Arsuzi on the other hand making different ideological contributions, they are considered the founders of Ba'athism. The closest they ever came to being members of the same organization was in 1939, when those three together with Michel Quzman, Shakir al-As and Ilyas Qandalaft, tried to establish a party. This did not happen because Arsuzi personally disliked Aflaq, who seemed to have reciprocated the feeling.