Here are more thoughts on writing simply, and how it takes time to do so.
From Blaise Pascal:
I have only made this letter longer because I have not had the time to make it shorter.
From Henry David Thoreau:
Not that the story need be long, but it will take a long while to make it short.
From Marcus T. Cicero:
If I had more time, I would have written a shorter letter.
From Karl Friedrich Gauss:
You know that I write slowly. This is chiefly because I am never satisfied until I have said as much as possible in a few words, and writing briefly takes far more time than writing at length.
From Friedrich Nietzsche:
It is my ambition to say in ten sentences what others say in a whole book.
From François Felelon:
The more you say, the less people remember. The fewer the words, the greater the profit.
From Mark Twain:
If you want me to give you a two-hour presentation, I am ready today. If you want only a five-minute speech, it will take me two weeks to prepare.