What does the man mean?

W: I don’ t think the job has to be done perfectly.
M: Maybe, but it’ s important to do your best.
W: Yes, maybe you are right.
M: Just do your best.

W: I was quite surprised when I heard William play the violin.
M: Why?
W: From the way he talked I thought he was just starting his lessons.
M: Oh, that’s the way he always talks.