'Yes, sir,' he resumed. 'You've got to turn over a new leaf from now on. Three good, plain meals a day, taken to the stroke of the clock. Eight hours in bed every night of your life, and nine if you can get 'em. Two hours of walkin', or other equally good exercise--if you can discover its equal; I can't--in the open air every day. And anything less will be a flat dereliction of duty, and bad citizenship, remember that. This is for by and by, of course. Just now you want twelve hours in bed, and half a dozen light meals a day. Mrs. Gilchrist knows all about that. Good, sensible woman, Mrs. Gilchrist. Wish there were more like her, these days. Oh, I'll be seeing you again, from time to time. Don't you bother your head about "accounts," my dear sir. And when you begin to get about now do oblige me by remembering your duty to yourself, as I've told you. As your doctor, I warn you, it's necessary in your case--absolutely necessary. _Good_-morning!' And so he trotted off to his high dog-cart and his morning rounds. An excellent and kindly man, designed by Nature, his own temperament, and long use, for the precise part in life he played. Such adequacy and fitness are rare, and very admirable. I sometimes think that if I could have exactly obeyed this excellent physician, my whole life had been quite different. But then, to be able exactly to obey him, perhaps it would have been necessary for me to have been a different person in the beginning. And then, I might never have met him, and--there's the end of a profitless speculation. As a fact I surreptitiously resumed work on that book long before the doctor gave permission, and within a week of settling his account I was once more living a life of which he would have strongly disapproved; though it certainly was a very much less wearing and unwholesome one than the life I had always lived in London. But, as against that, I now had a good deal less in the way of staying power and force of resistance. So far from having paid up in full, and wiped off all old scores, in the matter of those first years in London, I had barely discharged the first instalment of a penalty which was to prove part and parcel of every subsequent year in my life. And yet, as I have said, I sometimes think that doctor gave me my chance, if only it had been in me to live by his instructions. But, apparently, it was not. II Sidney Heron, the man who had introduced me to the country round about Leith Hill, was the first visitor received in my Dorking lodging. He came one Saturday morning when I had resumed work (though the doctor knew it not), and returned to town on the Sunday night.