Language Point 11

But it is the real bottom line in every area of society and a discipline we must demand of ourselves. (Para. 3)
Meaning: But integrity is very important in every area of society, and it is education that is necessary to us.
the bottom line: the most important factor; the main or essential point 重要因素；关键的东西
The bottom line is that it's not making any money. 关键是这不赚钱。
The bottom line is that it did not get the best out of everybody. 关键是这不能使每人都尽力。
Forget the detail and give me the bottom line. 细节就不要说了，说说关键的吧。
demand of: expect (something) from (someone or something) 期待；要求
Hard work will be demanded of students in this course. 这门课程要求学生用功去学。
The increased population is demanding too much of the electricity supply. 人口的增长对电力供应的需求太高了。