Consider the shady used car salesman; he wants you to buy this overpriced car that has several mechanical issues. He does not want you to look too closely. He does not want you to bring it to a mechanic that will find the flaws. He does not want you to know the truth of this car because he is trying to deceive you, and if you are not deceived you will not buy the car.
Now consider the honest car salesman. He has a mechanically sound car that is an amazing buy. He wants you to know everything there is to know. He wants you to see the maintenance records that shows how well the car was maintained. He wants you to see the CarFax and Consumer Report. He encourages you to bring it to your mechanic so the expert can tell you how nice this car is. The honest car salesman wants you to know the truth, he is not afraid of you knowing the truth because the more you know, the better chance he has of you buying the car.
In short, the truth is not afraid of you using logic and reason, while the lie wants you to use your mind as little as possible. The lie wants you to use emotion. The lie wants you to simply adopt what you are being told without thinking.