I do not know which of us got into the carriage first. Indeed I did not know he was in the carriage at all for some time. It was the last train from London to a Midland town—a stopping train, an train, one of those trains which give you an understanding of . It was tolerably full when it started, but as we stopped at the stations the travellers alighted in ones and twos, and by the time we had left the outer ring of London behind I was alone—or, rather, I thought I was alone.  
There is a pleasant sense of freedom about being alone in a carriage that is noisily through the night. It is liberty and unrestraint in a very agreeable form. You can do anything you like. You can talk to yourself as loud as you please and no one will hear you. You can have that argument out with Jones and roll him in the dust without fear of a counter-stroke. You can stand on your head and no one will see you. You can sing, or dance a two-step, or practise a golf stroke, or play marbles on the floor without let or . You can open the window or shut it without provoking a protest. You can open both windows or shut both. Indeed, you can go on opening them and shutting them as a sort of festival of freedom. You can have any corner you choose and try all of them in turn. You can lie at full length on the cushions and enjoy the luxury of breaking the regulations and possibly the heart of D.O.R.A. herself. Only D.O.R.A. will not know that her heart is broken. You have escaped even D.O.R.A.
 
On this night I did not do any of these things. They did not happen to occur to me. What I did was much more ordinary. When the last of my fellow-passengers had gone I put down my paper, stretched my arms and my legs, stood up and looked out of the window on the calm summer night through which I was journeying, noting the pale reminiscence of day that still lingered in the northern sky; crossed the carriage and looked out of the other window; lit a cigarette, sat down and began to read again. It was then that I became aware of my fellow traveller. He came and sat on my nose.... He was one of those wingy, nippy, insects that we call, , mosquitoes. I him off my nose, and he made a tour of the , investigated its three dimensions, visited each window, fluttered round the light, that there was nothing so interesting as that large animal in the corner, came and had a look at my neck.
 
I flicked him off again. He skipped away, took another round the compartment, returned, and seated himself on the back of my hand. It is enough, I said; magnanimity has its limits. Twice you have been warned that I am someone in particular, that my august person resents the impertinences of strangers. I assume the black cap. I you to death. Justice demands it, and the court awards it. The counts against you are many. You are a ; you are a public nuisance; you are travelling without a ticket; you have no meat . For these and many other misdemeanours you are about to die. I struck a swift, blow with my right hand. He the attack with an ease that me. My personal vanity was aroused. I lunged at him with my hand, with my paper; I jumped on the seat and pursued him round the lamp; I adopted tactics of cunning, waiting till he had alighted, approaching with a horrible stealthiness, striking with a sudden and terrible swiftness.
 
It was all in vain. He played with me, openly and ostentatiously, like a round an infuriated bull. It was obvious that he was enjoying himself, that it was for this that he had disturbed my . He wanted a little sport, and what sport like being chased by this huge, windmill of a creature, who tasted so good and seemed so helpless and so stupid? I began to enter into the spirit of the fellow. He was no longer a insect. He was developing into a personality, an intelligence that challenged the possession of this compartment with me on equal terms. I felt my heart warming towards him and the sense of superiority fading. How could I feel superior to a creature who was so manifestly my master in the only competition in which we had ever engaged? Why not be magnanimous again? Magnanimity and mercy were the noblest attributes of man. In the exercise of these high qualities I could recover my prestige. At present I was a ridiculous figure, a thing for laughter and derision. By being merciful I could reassert the moral dignity of man and go back to my corner with honour. I withdraw the sentence of death, I said, returning to my seat. I cannot kill you, but I can you. I do it.
 
I took up my paper and he came and sat on it. Foolish fellow, I said, you have delivered yourself into my hands. I have but to give this respectable weekly organ of opinion a on both covers and you are a , sandwiched between an article on "Peace Traps" and another on "The of Mr. Hughes." But I shall not do it. I have you, and I will satisfy you that when this large animal says a thing he means it. Moreover, I no longer desire to kill you. Through knowing you better I have come to feel—shall I say?—a sort of affection for you. I fancy that St. Francis would have called you "little brother." I cannot go so far as that in charity and civility. But I recognise a more distant relationship. Fortune has made us fellow travellers on this summer night. I have interested you and you have entertained me. The obligation is and it is founded on the fundamental fact that we are fellow mortals. The miracle of life is ours in common and its mystery too. I suppose you don't know anything about your journey. I'm not sure that I know much about mine. We are really, when you come to think of it, a good deal alike—just that are and then are not, coming out of the night into the lighted carriage, fluttering about the lamp for a while and going out into the night again. Perhaps...
 
"Going on to-night, sir?" said a voice at the window. It was a friendly porter giving me a hint that this was my station. I thanked him and said I must have been . And seizing my hat and stick I went out into the cool summer night. As I closed the door of the compartment I saw my fellow traveller fluttering round the lamp....