What excites the French?

I have so many questions about this, but I don't know where to start.

Do you remember how you felt when you learned how the eyeball works, visited the Sagrada Familia, got to the end of "Planet of the Apes," or found out how much people care about purses? You know, like, "I thought I understood this world, but now, looking at this unfinished cathedral that's still being built, I realize that it is vast and mysterious, and I will never really understand it." That's how I feel when I watch this video.