1. Measurement
The measurement has to be exact.
What's your waist measurement?
Note down the measurements of the door: 2 meters height and 1 meter width.
In the imperial measurement system, four quarts equals one gallon.
Precision in measurement is a necessity.
It is impossible to escape the impression that people commonly use false standards of measurement — that they seek power, success and wealth for themselves and admire them in others, and that they underestimate what is of true value in life.