Similar to [this topic](https://mathoverflow.net/questions/28268/do-you-read-the-masters), what are the easiest foundational French texts for someone learning the language? My intuition would be Cauchy and Lebesgue, but I have no idea where to start or which of their works are readily available.



Approachable French masters
Since you mention Lebesgue, I would recommend the following two classics, which build on his lectures at the Collège de France :


*[Leçons sur l'intégration](http://archive.org/stream/leonssurlintgra00lebegoog#page/n8/mode/2up)* 


*[Leçons sur les séries trigonométriques](http://archive.org/stream/leonssurlessrie01lebegoog#page/n6/mode/2up)*


Another suggestions : *Topologie générale* by Bourbaki, and *Théorie des distrbutions* by Laurent Schwartz.


