What is the author's style in Wind, Sand and Stars by Antoine de Saint-Exupery?

Most of the story is told in first person narrative, as it is Antoine's recounting his own experiences and impressions. The only time he breaks from that pattern is when he addresses Guillaumet directly in the chapter entitled "The Men." Antoine is a pilot and a student of human nature living in France in the late 1930s. He is a gentleman among gentlemen, passionate to see the world from as far above it as he can get.