The Tysons by May Sinclair

The idea of leaving England had occurred to Tyson more than once before. In Stanistreet's rooms it took its first vague shape. But Louis's parting words had a sting in them; they were at once a shock to his feelings and a challenge to his will.

Stanistreet had read him thoroughly. In plain language he had entertained serious thoughts of deserting Mrs. Nevill Tyson. Desertion? It was an ugly word. He dismissed his idea. He would dree his weird. He wasn't going to funk the thing -- not he! The New Life had been found impossible. No matter. _Certum quia impossibile_. Nothing like a big thumping paradox when you were about it. Impossibility had the smile and lure of haunting deity, the glamor of the arcana. That night he dedicated himself with more promises and vows.