Always too many on the shelves

There are always books you can give to charity, always too many on your shelves, even when you have given away as many as you can bear. I almost donated George Simenon's La Verité sur Bébé Donge a few weeks ago but when I opened it I realised it was my French prize in fifth year at school so, of course,  I can't release it. Why we keep these things I do not know. I doubt I'll read it again and it will  continue to gather dust.  I can't release The Lord of the Rings either, that...