How well

True. At the end of the day, its your behavior towards others that counts.

Peoples know the others to like his/her good behaviour

Thats right Karuna, that's why it is said that your behavior is your identity.

How you treat others is exactly what gives you value in society. Christianity teaches- Do to others as you would be done by.

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Well can mean anything opportunistic, sycophancy , what is actually needed is being fair to everyone and doing what your conscience dictates , in which case there is very little to worry.

Yes good nature is not dependent on any of these factors and is completely based on attitude to respect others. I feel that sometimes people don't understand this fact.

yes, we should never show any difference due to color, status, religion, culture etc. We should treat every one equal