Originally Posted by elcreative
If you purchase it then you own it... if it's a library book then you are only borrowing it as the actual owner is the library... and that doesn't make you the owner just because your payments help to support the library...
Yes, but owning a thing does not automatically give you an ethical right to copy it. Actually there is not restriction of copying in the natural case. So possession is enough for being able to copy a thing ethically. And we have possession in both these cases.