הלכה על ברכות 123:15

One should act modestly in the bathroom, and one is not called "modest" unless he is modest in the bathroom (Berachot 62a). That is to say, that he acts modestly in the bathroom, all the more so in other places. This is what the Rambam wrote in Hilchot Deot (Mishneh Torah, Human Dispositions 5, 6): Torah Scholars conduct themselves with great modesty: they don't disgrace themselves, and do not reveal their head or body. Even when they go to the washroom they should be modest, they shouldn't remove their clothes until seated, they shouldn't wipe with their right hand. And he should distance himself from everyone, and enter a room within a room, a cave within a cave, and only then defecate. And if he defecates behind a wall, he should distance himself so that he doesn't hear another if he is making sounds. And if he defecates in a valley, he should distance himself so that nobody sees his nakedness. And he should not speak while he is defecating, even for a great need. And just like he is modest in the washroom during the day, so too should he be at night. And one should always defecate in the morning and the night only, to avoid the need of distancing himself (from others). Until here is his writing, and he omitted some laws that he will outline. And I do not know his reasoning.