Pithy sentences are like sharp nails which force truth upon our memory.
Speaking of Twitter I don't even know if I composed a blog entry in 2009 as I was too busy parceling my every thought into cute 140-character sound bites. I used to only worry about being pithy for a living now some of my best lines are wasted on a free app!
You take a number of small steps which you believe are right thinking maybe tomorrow somebody will treat this as a dangerous provocation. And then you wait. If there is no reaction you take another step: courage is only an accumulation of small steps.