Be it software, technical documents or emails.
If any man wish to write in clear style, let him be first clear in his thoughts; and if any would write in a noble style, let him first possess a noble soul.
~ Johann Wolfgang von Goethe
Learn as much by writing as by reading.
~ Lord Acton
I too am an apprentice, always—learning as much by failing as by succeeding, as much by following as by leading.
~ antonius
So don't despair that no one agrees with you and point your mistakes, for "... when you're screwing up and nobody's saying anything to you anymore, that means they've given up on you."
~ Randy Pausch