Principle – or lack thereof – is a determining factor for many characters in Cyrano de Bergerac. It defines the difference between the protagonist and the villain. Principle in this play often means valuing honor above practicality. As such, acting according to principle isn’t always the most beneficial course of action, but it certainly is the most noble.
Cyrano is rendered cowardly and unprincipled for his refusal to tell Roxane how he feels and the ease with which he lies to his lady love.
Cyrano’s deception of Roxane is justified because he does it solely to make her happy.