Our life, it probably began inside of the ocean,' Johnny said quietly. 'About four thousand million years before now. Probably near hot places, like volcanoes, under the sea.' I turned to look at him. 'And for almost all of that long time, all the living things were water things, living inside the sea. Then, a few hundred million years ago, maybe a little more--just a little while, really, in the big history of the Earth--the living things began to be living on the land, as well.' I was frowning and smiling at the same time, surprised and bewildered. I held my breath, afraid that any sound might interrupt his musing. 'But in a way you can say that after leaving the sea, after all those millions of years of living inside of the sea, we took the ocean with us. When a woman makes a baby, she gives it water, inside her body, to grow in. That water inside her body is almost exactly the same as the water of the sea. It is salty, by just the same amount. She makes a little ocean, in her body. And not only this. Our blood and our sweating, they are both salty, almost exactly like the water from the sea is salty. We carry oceans inside of us, in our blood and our sweat. And we are crying the oceans, in our tears.