Love your library - and love your favorite authors! I ran across this article in The Morning News. A few quotes to pull you in:

Libraries are fundamental pieces of any community, as vital as sewers or snowplows or good pizza. Libraries are little holy lands with giant invisible tentacles of imagination that fly out the doors and plunge through the windows of the houses around them. Libraries are often the greatest thing that has ever happened to any child in any neighborhood in any country.

But! If you get a book out of the library, read it, and really love it, one good thing you can do for its writer and for yourself is go to a bookstore and buy a copy of his or her book. Because it will help that particular artist continue to put art out into the world.

So do what you want. But remember that while a book purchase isn’t necessarily food in a writer’s pantry, it is a message to a publisher that a writer matters, that you want to see more of her kinds of books out there in the world. And, in a capitalist market, whose primary goal is not to improve society but to maximize the wealth of the capitalist, that’s one of the most important messages you can send.

Read. Visit libraries. Love books. And consider buying them once in a while.