Deception is one of the quickest ways to gain little things and lose big things.
A little understanding of "As you sow, so shall you reap" is important, because then you can't blame the condition you're in on anyone else.
Words are not (except in their own little corner) facts or things: we need therefore to prise them off the world, to hold them apart from and against it, so that we can realize their inadequacies and arbitrariness, and can relook at the world without blinkers.