Are you a kind man? If you are, everyone would live like you, so they would be kind. Can you use war to solve problems? If no, others would not do the same, so there would be no war. If you are violent, in this scenario I give, the whole humanity would be violent. So my question is to suggest one to ask themselves, am I good enough model for humanity? And you have pit it well with the proverb which I have found out means, "before attempting to correct others, make sure that you aren't guilty of the same faults yourself." This is applicable in the sense that one might criticize another, but are they themselves the example of the perfect human being. A model that can be used by the rest of mankind? Then perhaps even if one is to criticize, it would be from a place of compassion, and it would the perfection would be evident.

Never ending enquiry, I get the joke but enquiry must end.