Our judgment to other people is base on the principle of approving our own conduct

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The primary we to study our own particular sentiments and motives, and the main way to frame any judgment about them, is to expel ourselves from our own natural station and endeavor to see them as from a specific location, and our way of doing that is by attempting to see them with the eyes of other individuals, or as other individuals are probably going to see them.

Any judgment we frame about our own conduct implicitly alludes to what others do. We attempt to analyze our own conduct as we imagine some other reasonable and impartial onlooker would look at it. In the event that when we put ourselves in his circumstance we altogether go into every one of the passions and motives that impacted it, we support of it by sensitivity for the approval of this gathered reasonable judge.

Two exercises of sensitivity

• Sympathy with genuine motives and emotions
• Sympathy with those sentiments of the spectator's.

In case that it were feasible for a human animal to develop to adulthood with no correspondence with different humans, he couldn't have pondered his own particular character, about the legitimacy or bad mark of his own sentiments and conduct, about the beauty or ugliness of his own psyche, any more than he could consider the beauty or ugliness of his own face.

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These are everything that he can't undoubtedly observe and naturally doesn't take a gander at, and he isn't furnished with any mirror that can present them to his view. However, now bring him into society, and he instantly has the mirror that he needed some time recently.

It is put in the faces and conduct of those he lives with, which always flag when those individuals go into his sentiments and when they dislike them and that is the thing that gives him his first perspective of the legitimacy and indecency of his own passions, the beauty and ugliness of his own brain.

How hard it would be for a single man to consider his own motives and conduct, however and in addition being hard it would be uninteresting for him to do as such. On the off chance that a man had been from his introduction to the world an outsider to society, his entire consideration would be focussed on the objects of his passions, the outer bodies that either satisfied or hurt him.

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With respect to those passions in themselves, despite the fact that they would be more instantly present to him than whatever else, he would scarcely ever consider them. The possibility of them couldn't interest him enough to approach his mindful thought.

The possibility of his joy couldn't cause any new joy, or the possibility of his distress any new distress, despite the fact that considerations about the reasons for those passions may frequently excite both. Be that as it may, at that point, bring him into society and all his own particular passions will promptly turn into the reasons for new passions.

He will watch that mankind affirm of some of them, and this will encourage him and that they are appalled by others, which will cast him down. His wants and abhorrences, his joys and sorrows, will now regularly cause new wants and new revultions, new joys and new sorrows, so they will now interest him profoundly, and frequently approach his most mindful thought.

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References:
https://oureverydaylife.com/make-good-judgment-decisions-7806970.html
http://www.decision-making-solutions.com/judgment-and-decision-making.html
http://aynrandlexicon.com/lexicon/moral_judgment.html