Who was the most ethical in "The Lives of Others"

In the film The Lives of Others there was a large amount of unethical behavior. People were being monitored in there own homes, artists would be interrogated for two days and people in charge could force women to sleep with them or else they would be thrown into prison or worse. But there was also light in this dark world. An agent for the stassi (Secret Police) named Weisler is the most ethical person in the film. He was assigned to spy on an artist named Dreyman and when he heard about him talking negatively about the government he didn't turn him in. Also when the Stassi was searching Dreyman's appartement Weisler removed the typewriter Dreyman used to write an anti-east germany article.