The word "right" (without the use of modifiers such as “exactly”) might sound too weak and easily satisfiable, but I think the idea is the following: Theories that may seem complete and robust today might be found to be incomplete or wrong in the future. You cannot claim certainty in them, although you can probably claim high confidence under certain conditions.
You can't ever claim absolute certainty in anything. There's no 1.0 probability in predictions about the universe. But science can create claims of being "right" as strong and justified as any other known process. Saying "science doesn't claim to get things right" is false, unless you go on to say "nothing can (correctly) claim to get things right, it's epistemologically impossible".
Here's the new thread for posting quotes, with the usual rules: