Rene Girard's Je vois Satan tomber comme l'eclair

This is a book that I can honestly say I didn't understand. I read the introduction of the argument, which is that the real crux of sin and conflict in human life is envy of what the other person has, and that this applies in all spheres of human interaction. I thought he could have been really a lot clearer in his key argument. Nonetheless, there are certain flavorful quote. On p. 250, he says that some anthropological extra-terrestrial would think that there once existed a society much superior to ours in terms of compassion, so much so that it left an imperishable memory. What has actually happened is that humanity has this long-term aspiration and we always reach for it, and never touch it. And then on P. 271, "Heidegger a interdit l'etude de ces textes sans jamais desavouer leur contenu." Heidegger has prohibited the studies of his texts, without withdrawing anything in their content.