Emotions define every human being.
It is one of the factors that separate humans from all other living and breathing creations.
It is also the reason why humans break apart like no other creature alive.
Emotions define both the strengths and weaknesses of a person. It also identifies well with the conditions by which a person acts and reacts on situations he faces in life.
Nonetheless, as emotions could break and make a person, it is considered as the very tool that determines the difference if humans from everything else that is living and breathing.