Thus when he does not find you continually thwarting him, when he no longer distrusts you, no longer has… — Jean Jacques Rousseau

Thus when he does not find you continually thwarting him, when he no longer distrusts you, no longer has anything to conceal from you, he will neither tell you lies nor deceive you; he will show himself fearlessly as he really is, and you can study him at your ease, and surround him with all the lessons you would have him learn, without awaking his suspicions.

Neither will he keep a curious and jealous eye on your own conduct, nor take a secret delight in catching you at fault. It is a great thing to avoid this. One of the child's first objects is, as I have said, to find the weak spots in its rulers. Though this leads to spitefulness, it does not arise from it, but from the desire to evade a disagreeable control. Overburdened by the yoke laid upon him, he tries to shake it off, and the faults he finds in his master give him a good opportunity for this. Still the habit of spying out faults and delighting in them grows upon people. Clearly we have stopped another of the springs of vice in Emile's heart. Having nothing to gain from my faults, he will not be on the watch for them, nor will he be tempted to look out for the faults of others.

Source: Wikiquote · CC BY-SA 4.0