“Always remember, child" her first teacher had impressed on her, "that to think bad thoughts is really the easiest thing in the world. If you leave your mind to itself it will spiral you down into ever-increasing unhappiness. To think good thoughts, however, requires effort. This is one of the things that need disipline –training- is about. So train your mind to dwell on sweet perfumes, the touch of this silk, tender raindrops against the shoji, the curve of the flower arrangement, the tranquillity of dawn. Then, at length, you won't have to make such a great effort and you will be of value to yourself,…” James Clavell, Shōgun
 
The guy who invented hand sanitizer must be rubbing his hands right now...
 
Just one casualty of this (Social Media) is that it has become very nearly impossible to sustain principles in public. For unless a principle works identically well for every body all the time, there are going to be some people who benefit from it and some who are comparatively disadvantaged by it. Douglas Murray, ‘The Madness of Crowds’, 2019.
 
Math is fun. It teaches you life and death information.  Like, when you are really cold, you should stand near a corner. It's 90 degrees there.