Five books I keep returning to

Not the best books I have read. The five I find myself, without planning to, opening again.

Three of these were gifts. Two I found in used bookstores. None of them were anywhere near the top of any list when I bought them. They have become the books I trust the way you trust a friend who does not need you to perform.

I will write about each of them eventually, but not yet. I want a few more readings first.