writing is like this:

you go to the local library and borrow a book
you go back home and read it

after a couple of days you return it

later you remember there was a passage
that you would have liked to copy
in your diary

so you go back to the library and ask for the book

to your dismay
you discover that it doesn't exist
and never has

now you have to write it down
from your memory
as well as you can remember