Alfred Cortot on the Chopin Etudes (1960, en français)

To commemorate the 150th anniverary of Chopin's birth, the Franco-Swiss pianist Alfred Cortot (1877-1962) gave a talk about the young Chopin and his Etudes Opus 10 & 25 for Radio Lausanne in 1960.
It would be great if a listener who is fluent in both French and English could give a résumé of the most important statements of his speech!
From: https://www.rts.ch/archives/radio/divers/emission-sans-nom/4043421-les-etudes-de-chopin.html