Translation of "Remarquant" in English

remarquant qu'il pouvait penser à d'autres maréchaux plus qualifiés. Mais il a donné son

remarking that he could think of other Marshals  who were better qualified. But he did give his  

Les mathématiques sont la partie de la science, dont vous pourriez vous occuper durablement, lorsque vous vous lèveriez le matin en remarquant, que l'univers a disparu.

Mathematics is that branch of science which you could continue to pursue, even if you were to get up in the morning and notice that the universe had disappeared.