Every life contains its own mysteries, and the biographer must respect the unknowable.
The universe is full of magical things patiently waiting for our wits to grow sharper.
I don't care what you say about me as long as it's not true.
"To be a writer is to sit down at one's desk in the chill portion of every day, and to write; not waiting for the little jet of the blue flame of genius to start from the breastbone."
Just the discipline of having to put your thoughts in order with somebody else is very useful thing.