" I have been asked what I mean by " Words of Honor." I will tell you.Place me behind prison walls- wall of stones ever so high, ever so thick, reaching ever so far into the ground- there is a possibility that In some way or another I might be able to escape, but Stand me on the floor and draw a chalk  line around me and have me give my word of honor need to cross it. Can I get out of that circle? No, never I'd die first." Karl G. Maeser

I think what Karl is saying is that we should always keep our word and have our word of honor. It's like keeping a promise you made for someone. You should always keep your promises and your word because they can mean a lot to a person or even people.