Christophe unb.u.t.toned his waistcoat and took a long breath.

Olivier went and opened the window wide.

"You must be very unhappy in a town, M. Krafft. But there's no danger of my suffering from too much vitality. I breathe so little that I can live anywhere. And yet there are nights in summer when even I am hard put to it to get through. I'm terrified when I see them coming. Then I stay sitting up in bed, and I'm almost stifled."

Christophe looked at the heap of pillows on the bed, and from them to Olivier's worn face: and he could see him struggling there in the darkness.

"Leave it," he said. "Why do you stay?"

Olivier shrugged his shoulders and replied carelessly:

"It doesn't matter where I live."

Heavy footsteps padded across the floor above them. In the room below a shrill argument was toward. And always, without ceasing, the walls were shaken by the rumbling of the buses in the street.

"And the house!" Christophe went on. "The house reeking of filth, the hot dirtiness of it all, the shameful poverty--how can you bring yourself to come back to it night after night? Don't you lose heart with it all? I couldn't live in it for a moment. I'd rather sleep under an arch."

"Yes. I felt all that at first, and suffered. I was just as disgusted as you are. When I went for walks as a boy, the mere sight of some of the crowded dirty streets made me ill. They gave me all sorts of fantastic horrors, which I dared not speak of. I used to think: 'If there were an earthquake now, I should be dead, and stay here for ever and ever'; and that seemed to me the most appalling thing that could happen. I never thought that one day I should live in one of them of my own free-will, and that in all probability I shall die there. And then it became easier to put up with: it had to. It still revolts me: but I try not to think of it. When I climb the stairs I close my eyes, and stop my ears, and hold my nose, and shut off all my senses and withdraw utterly into myself. And then, over the roof there, I can see the tops of the branches of an acacia. I sit here in this corner so that I don't see anything else: and in the evening when the wind rustles through them I fancy that I am far away from Paris: and the mighty roar of a forest has never seemed so sweet to me as the gentle murmuring of those few frail leaves at certain moments."

"Yes," said Christophe. "I've no doubt that you are always dreaming; but it's all wrong to waste your fancy in such a struggle against the sordid things of life, when you might be using it in the creation of other lives."

"Isn't it the common lot? Don't you yourself waste energy in anger and bitter struggles?"

"That's not the same thing. It's natural to me: what I was born for. Look at my arms and hands! Fighting is the breath of life to me. But you haven't any too much strength: that's obvious."

Olivier looked sadly down at his thin wrists, and said:

"Yes. I am weak: I always have been. But what can I do? One must live?"

"How do you make your living?"

"I teach."

"Teach what?"

"Everything--Latin, Greek, history. I coach for degrees. And I lecture on Moral Philosophy at the Munic.i.p.al School."

"Lecture on what?"

"Moral Philosophy."

"What in thunder is that? Do they teach morality in French schools?"

Olivier smiled:

"Of course."

"Is there enough in it to keep you talking for ten minutes?"

"I have to lecture for twelve hours a week."

"Do you teach them to do evil, then?"

"What do you mean?"

"There's no need for so much talk to find out what good is."

"Or to leave it undiscovered either."

"Good gracious, yes! Leave it undiscovered. There are worse ways of doing good than knowing nothing about it. Good isn't a matter of knowledge: it's a matter of action. It's only your neurasthenics who go haggling about morality: and the first of all moral laws is not to be neurasthenic. Rotten pedants! They are like cripples teaching people how to walk."

"But they don't do their talking for such as you. You _know_: but there are so many who do not know!"

"Well, let them crawl like children until they learn how to walk by themselves. But whether they go on two legs or on all fours, the first thing, the only thing you can ask is that they should walk somehow."

He was prowling round and round and up and down the room, though less than four strides took him across it. He stopped in front of the piano, opened it, turned over the pages of some music, touched the keys, and said:

"Play me something."

Olivier started.

"I!" he said. "What an idea!"

"Madame Roussin told me you were a good musician. Come: play me something."

"With you listening? Oh!" he said, "I should die."

The sincerity and simplicity with which he spoke made Christophe laugh: Olivier, too, though rather bashfully.

"Well," said Christophe, "is that a reason for a Frenchman?"

Olivier still drew back.

"But why? Why do you want me to?"

"I'll tell you presently. Play!"

"What?"

"Anything you like."

Olivier sat down at the piano with a sigh, and, obedient to the imperious will of the friend who had sought him out, he began to play the beautiful _Adagio in B Minor_ of Mozart. At first his fingers trembled so that he could hardly make them press down the keys: but he regained courage little by little: and, while he thought he was but repeating Mozart's utterance, he unwittingly revealed his inmost heart. Music is an indiscreet confidant: it betrays the most secret thoughts of its lovers to those who love it.

Through the G.o.dlike scheme of the _Adagio_ of Mozart Christophe could perceive the invisible lines of the character, not of Mozart, but of his new friend sitting there by the piano: the serene melancholy, the timid, tender smile of the boy, so nervous, so pure, so full of love, so ready to blush. But he had hardly reached the end of the air, the topmost point where the melody of sorrowful love ascends and snaps, when a sudden irrepressible feeling of shame and modesty overcame Olivier, so that he could not go on: his fingers would not move, and his voice failed him. His hands fell by his side, and he said:

"I can't play any more...."

Christophe was standing behind him, and he stooped and reached over him and finished the broken melody: then he said: