Do I make myself clear?

From Do I Make Myself Clear? by Harold Evans
"Writers generally set out with good intentions, but something happens along the way. We don't really know what we want to say until we try to write it, and in the gap between the thought and its expression we realize the bold idea has to be qualified or elaborated. We write more sentences. Then more. We are soon in the territory defined by the French mathematician Blaise Pascal (1623-1662) but associated with others, too: "I would have written something shorter, but I didn't have time."