Obi-Wan listens, to both Galen's words and the anxiety he can feel from the man. He takes a moment to think, stroking his beard, before offering a reply.

"And what exactly is it that you're afraid of, Galen? What do you think will happen when and if people notice you?"

He could take a guess, but he wanted to hear it from the man himself. To acknowledge one's fear was the first step in controlling it.