This is a very interesting concept: making every word count. I tend to repeat myself, but I need to become more economical in my word use, especially in debate. Less repetition means more content.
When words are many, sin is not absent, but he who holds his tongue is wise. - Proverbs 10:19
Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen. - Ephesians 4:29
"There's a great power in words, if you don't hitch too many of them together." - Josh Billings
"My father gave me these hints on speech-making: 'Be sincere, be brief, be seated.'" - James Roosevelt