when the books are too big for the pile, I place them at the side or at the bottom, but in the same pile. I feel bad about it, but not very. The organisation is just for convenience, I'm actually at this point ethically opposed to it. Books should be a jumble. An undusty jumble. (Then it doesn't matter that the big books are at the bottom.)

This means that this weekend I will probably just dust everybook and put them in neat piles.