Final answer:
Lorde mentions the expression "The truth will set you free" as acknowledging the strength of the erotic.
Step-by-step explanation:
The common expression that Lorde mentions as acknowledging the strength of the erotic is:
"The truth will set you free"
Lorde's quote suggests that embracing and understanding one's true desires and passions can lead to a sense of liberation and empowerment. By acknowledging the truth and value of one's erotic desires, Lorde emphasizes the importance of embracing one's authentic self.