Lesson

According to Cambridge Dictionary,
Rude (adjective)
not polite; offensive or embarrassing

Arrogant (adjective)
unpleasantly proud and behaving as if you are more important than, or know more than, other people

Manner (noun )
the usual way in which you behave towards other people, or the way you behave on a particular occasion

Emotional Intelligence Quotient (EQ)
is a term that describes the ability, capacity, skill or (in the case of the trait EI model) a self-perceived ability, to identify, assess, and manage the emotions of one's self, of others, and of groups.

When u do not acknowledge a person upon seeing someone u know, what does it decipher?
rude? if nothing was even been convey, how to be impolite?
arrogant? if u're lower rank than him/her, on what basis to be arrogant?
no manner? the usual way to behave when u see someone u dislike is a usual behavior. That's nothing unusual.
low EQ? unless u lose emotional control, flare up temper and shed tears of anger.

As such, i don't think i'm guilty of any of above.
My only crime is not hypocritical.

i always believed respect is earned.
Don't expect it to be given freely, esp not from me.
My respects are reserved for those who are worth it.
My smiles are reserved to those who appreciate it.
My greetings are reserved for those who knows how to 真心待人.
u're not worth it if u don't received it from me.
If u insist for it, u will only get more than an acknowledgment from me.
in an unpleasant way.
Neither do i want to learn any lesson from anyone that does not worth anything to me.
Thank you.