“O my body, make me always a man who questions!” is a line from Frantz Fanon's Black Skin, White Masks.
It appears in the book's “final prayer”, where Fanon asks his body to not allow him to be seduced by forms of being-in-the-world that normalize violence and dehumanization. Fanon was an atheist, so praying to a higher authority would have seemed ludicrous to him. Instead, he appeals to his own body, something concrete and immediate, as a way to go beyond abstract political rights discourse.
Fanon explores the psychology of colonialism and the complex identities of colonized people. Fanon was a psychiatrist and philosopher whose work has been influential in post-colonial studies.