All this to say: I am forty-three years old. I may yet live another forty. What do I do with those years? How do I fill them without Lexy? When I come to tell the story of my life, there will be a line, creased and blurred and soft with age, where she stops. If I win the lottery, if I father a child, if I lose the use of my legs, it will be after she has finished knowing me. "When I get to Heaven", my grandmother used to say, widowed at thirty-nine, "your grandfather won't even recognize me.

It's not the content of our dreams that gives our second heart its dark color; it's the thoughts that go through our heads in those wakeful moments when sleep won't come. And those are the things we never tell anyone at all.

I can't take one breath, not one single breath, without knowing that I love you.

All this to say: I am forty-three years old. I may yet live another forty. What do I do with those years? How do I fill them without Lexy? When I come to tell the story of my life, there will be a line, creased and blurred and soft with age, where she stops. If I win the lottery, if I father a child, if I lose the use of my legs, it will be after she has finished knowing me. "When I get to Heaven", my grandmother used to say, widowed at thirty-nine, "your grandfather won't even recognize me.

There would be hard times, but what did I care if we had hard times? The branches of my love were wide, and they caught the rain and the snow. We would be okay, the two of us together. We would be okay.

It's true, isn't it, that each of us has two hearts? The secret heart, curled behind like a fist, living gnarled and shrunken beneath the plain, open one we use every day.

The conclusion I have reached is that, above all, dogs are witnesses. They are allowed access to our most private moments. They are there when we think we are alone. Think of what they could tell us. They sit on the laps of presidents. They see acts of love and violence, quarrels and feuds, and the secret play of children. If they could tell us everything they have seen, all of the gaps of our lives would stitch themselves together.