I read The Columbia History of the World. Well, the first 50 pages. It explained that agriculture allowed people to live in cities, and that for agriculture t

I read The Columbia History of the World. Well, the first 50 pages. It explained that agriculture allowed people to live in cities, and that for agriculture to work, people had to avoid eating their seeds in the long winter. Or, as it got lodged in my mind -- Delayed gratification is the root of civilization. -- Which saying has been impressively valuable in my life