I search the bookcase. I happen to be working in a room of my mother's house where she has set out tea cups and cookies. Saturn rules Capricorn, authority figures, governments, presidents, bankers and the economy. Capricorn, Saturn's home sign, is the sign of Winter and darkness, the time when we most have to look and be sharp to survive. Capricorn is like that, about surviving.
Winter is a metaphor for hard times.
Like the pitiless frost Saturn can be a 'payback' for leniencies and foolish oversights commited during times of abundance. Squirrels who don't set aside enough nuts will go without. So somehow, Saturn is the keeper of the good years and the bad years. The seven bad years that Pharoah had to endure. Odd that Saturn should take 7 years for each quarter circle, a total of 28.