Honest people love truth and justice.
I’ve been in more than one lesson on honesty where hypothetical WWII-Era German families hiding Jewish neighbors in the attic are brought up as thought experiments on what it might mean to always always always be honest. I think that little line lays that thought experiment to waste, more on that in a minute.
The rest of that initial line I quoted goes on to say:
[Honest people] are honest in their words and actions. They do not lie, cheat, or steal.