Do you think the discoveries of the elements and geometry are on the same level?
Why do you think the author put at the beginning of chapter 7 that we can skip most of it if it's too weighty for our taste?
Did having examples like the book one help you understand what it was saying? (234)
As the book asks “Can we be sure Euclidean geometry is consistent? (244)
Did you understand the figure on page 253?