The act of writing, when it goes well, gives me a pleasure, a joy, unlike any other. It takes me to another place--irrespective of my subject--where I am totally absorbed and oblivious to distracting thoughts, worries, preoccupations, or indeed the passage of time. In those rare, heavenly states of mind, I may write nonstop until I can no longer see the paper. Only then do I realize that evening has come and that I have been writing all day. Over a lifetime, I have written millions of words, but the act of writing seems as fresh, and as much fun, as when I started it nearly seventy years ago.