As each season recurs, so one feels that London can never be more beautiful, never better express her inmost spirit. I write these lines in September, when we have mornings of pearly mist, all the city a Whistler pastel, the air bland but stung with sharp points, and the squares dressed in many-tinted garments; and I feel that this is the month of months for the Londoner. Yet in April, when every parish, from Bloomsbury to Ilford, and from Haggerston to Cricklewood, is a dream of lilac and may, and when laburnum and jasmine are showering their petals over Shoreditch and Bermondsey Wall, when even Cherry Gardens Pier has lost its heart in a tangle of apple-blossom, and when the statue of James II is wreathed about with stars and boughs of hawthorn as fair as a young girl's arms, when Kensington Gardens, Brockwell Park, and the Tunnel Gardens of Blackwell are ablaze with colour and song, and when life riots in the sap of the trees as in the blood of the children who throng their walks, then, I say, London is herself. But I know that when November brings the profound fogs and glamorous lights, and I walk perilously in the safest streets, knowing by sound that I am accompanied, but seeing no one, scarce knowing whether I am in Oxford Street or the Barking Road, or in Stamboul, then I shall feel: "This is the real old London." The pallid pomp of the white lilac seems to be London in essence. The rich-scented winter fog seems to be London in essence. The hot, reeking dusk of July seems to be London in essence. London, I repeat, is all things to all men. Whatsoever you may find in the uttermost corners of the earth, that you shall find in London. It is the city of the world. You may stand in Piccadilly Circus at midnight and fingerpost yourself to the country of your dreams. A penny or twopenny omnibus will land you in the heart of France, Switzerland, Italy, Germany, Russia, Palestine, China, the Malay Peninsula, Norway, Sweden, Holland, and Hooligania; to all of which places I propose to take you, for food and drink, laughter and chatter, in the pages that follow. I shall show you London by night: not the popular melodramatic divisions of London rich and London poor, but many Londons that you never dreamed of and may curious nights. London by night. Somehow, the pen stops there. Having written that, I feel that the book is done. I realize my impotence. My pen boggles at the task of adding another word or another hundred thousand words which shall light up those thunderous syllables. For to write about London Nights is to write a book about _Everything_. Philosophy, humanism, religion, love, and death, and delight--all these things must crowd upon one's pages. And once I am started, they will crowd--tiresomely, chaotically, tumbling out in that white heat of enthusiasm which, as a famous divine has said, makes such damned hard reading.