Translations for concession in French

Here are paragraphs from public domain books translated:

"Well, that's my first concession," added the doctor. "My second is a piece of advice. Keep the boy close beside you, and when you need help, halloo. I'm off to seek it for you, and that itself will show you if I speak at random. Good-by, Jim."	— Voilà donc ma première concession, reprit le docteur. Ma seconde est un avis. Gardez bien le petit auprès de vous, et quand vous aurez besoin de secours, hélez. Je m’en vais de ce pas vous le chercher, et cela même vous montre que je ne parle pas en l’air… Au revoir, Jim.
Treasure Island, by Robert Louis Stevenson	L’Île au trésor, de Robert Louis Stevenson

I recalled the story, and, having longed to suffer for this woman, I was afraid that she would accept me too promptly and give me at once what I fain would have purchased by long waiting or some great sacrifice. We men are built like that, and it is very fortunate that the imagination lends so much poetry to the senses, and that the desires of the body make thus such concession to the dreams of the soul. If anyone had said to me, You shall have this woman to-night and be killed tomorrow, I would have accepted. If anyone had said to me, you can be her lover for ten pounds, I would have refused. I would have cried like a child who sees the castle he has been dreaming about vanish away as he awakens from sleep.

Je me rappelais cette étude, et moi qui aurais voulu souffrir pour cette femme, je craignais qu'elle ne m'acceptât trop vite et ne me donnât trop promptement un amour que j'eusse voulu payer d'une longue attente ou d'un grand sacrifice. Nous sommes ainsi, nous autres hommes; et il est bien heureux que l'imagination laisse cette poésie aux sens, et que les désirs du corps fassent cette concession aux rêves de l'âme. Enfin, on m'eût dit: vous aurez cette femme ce soir, et vous serez tué demain, j'eusse accepté. On m'eût dit: donnez dix louis, et vous serez son amant, j'eusse refusé et pleuré, comme un enfant qui voit s'évanouir au réveil le château entrevu la nuit.

The Lady with the Camellias, by Alexandre Dumas son

La Dame aux Camélias, de Alexandre Dumas fils