If you ask what is it that warms our heart more than a hot stove, then my answer will be a sincere smile!

You can tell whether a person is really laughing, not by his mouth but by his eyes! An insincere smile is nothing more than just opening the mouth and airing the teeth! Watch the eyes!

Unless your smile is sincere, showing your teeth will not convince people that you are smiling!

Smile is an act of conquest! The person you smile at is immediately conquered, as if by an army of a thousand people!

Nothing is more valuable than a tired smile to greet people despite being in the middle of a hard work!