how did meursalts attorney defend him ?

Meursalts Lawyer tries to argue that Meursault lacks empathy and compassion. The lawyer argues that Meursalts lacks the ability to deal with people. Meursault's lawyer really dislikes Meursault, especially his ambivalence to his mother. The lawyer might have tried something else, something that doesn't make Meursault look like a heartless thug. He might have tried to understand and explain Meursault's existentialist philosophy to life.