Determinedly he took up his pen. “The hydrogen ion concentration in the blood ...” he began a new paragraph. But he got no further than the first seven words.

If, he began thinking with a frightful confusion, if—if—if—— Past conditionals, hopelessly past. He might have been brought up more elegantly; his father, for example, might have been a barrister instead of a barrister’s clerk. He mightn’t have had to work so hard when he was young; might have been about more, danced more, seen more young women. If he had met her years ago—during the war, should one say, dressed in the uniform of a lieutenant in the Guards....

He had pretended that he wasn’t interested in women; that they had no effect on him; that, in fact, he was above that sort of thing. Imbecile! He might as well have said that he was above having a pair of kidneys. He had only consented to admit, graciously, that they were a physiological necessity.

O God, what a fool he had been!

And then, what about Rosie? What sort of a life had she been having while he was being above that sort of thing? Now he came to think of it, he really knew nothing about her, except that she had been quite incapable of learning correctly, even by heart, the simplest facts about the physiology of frogs. Having found that out, he had really given up exploring further. How could he have been so stupid?

Rosie had been in love with him, he supposed. Had he been in love with her? No. He had taken care not to be. On principle. He had married her as a measure of intimate hygiene; out of protective affection, too, certainly out of affection; and a little for amusement, as one might buy a puppy.

Mrs. Viveash had opened his eyes; seeing her, he had also begun to notice Rosie. It seemed to him that he had been a loutish cad as well as an imbecile.

What should he do about it? He sat for a long time wondering.

In the end he decided that the best thing would be to go and tell Rosie all about it, all about everything.

About Mrs. Viveash too? Yes, about Mrs. Viveash too. He would get over Mrs. Viveash more easily and more rapidly if he did. And he would begin to try and find out about Rosie. He would explore her. He would discover all the other things besides an incapacity to learn physiology that were in her. He would discover her, he would quicken his affection for her into something livelier and more urgent. And they would begin again; more satisfactorily this time; with knowledge and understanding; wise from their experience.