It's also not unusual for writers to look backward. Because that's your pool of resources.

Writing free verse is like playing tennis with the net down.

Writing ... is the great invention of the world.

Talking is a hydrant in the yard and writing is a faucet upstairs in the house. Opening the first takes the pressure off the second.

All there is to writing is having ideas. To learn to write is to learn to have ideas.

It was great fun writing a book.... It built an impalpable crystal sphere around one of interests and ideas. In a sense one felt like a goldfish in a bowl; but in this case the goldfish made his own bowl. This came along everywhere with me. It never got knocked about in travelling, and there was never a moment when agreeable occupation was lacking. Either the glass had to be polished, or the structure extended or contracted, or the walls required strengthening.