The Spiritist Review - Journal of Psychological Studies - 1863

What sometimes precludes you from correcting a defect or a vice is exactly the fact that you do not notice that you carry it. While you see the tiniest faults of your neighbor, of your brother, not even suspecting that you bear the same faults perhaps a hundred times greater than theirs. That is nothing more than the consequence of pride that leads all imperfect creatures to only see good things in themselves. You should analyze yourselves as if it was not you. Imagine for example that what you did to your brother had been done by him to you. Put yourself in his place. What would you do? Respond without a preconceived idea for I suppose you want to find the truth. By doing so I am certain that you will frequently find out about your own defects that you had not noticed before. Be honest with yourselves; get to know your character but do not flatter it because adulated kids become bad and the adulators are the first one to experiment the effects. Go back to the bag where you keep your defects and the defects of others. Bring yours to the top and keep the others behind and observe well if that is not keeping your head down when you have that load before your eyes.

La Fontaine