Philip Larkin said this quote
“ Empty-page staring again tonight. It's maddening. I suppose people who don't write (like the Connollies) imagine anything that can be though can be expressed. Well, I don't know. I can't do it. It's this sort of thing that makes me belittle the whole business: what's the good of a 'talent' if you can't do it when you want to? What should we think of a woodcarver who couldn't woodcarver? or a pianist who couldn't play the piano? Bah, likewise grrr. ”