Emotions...?

I dont understand, what it is that makes all of us humans think we can do anytihng in the world at times, but at others we feel as if even the tiniest thing in the world could do us harm.Are we weak or are we strong?Even the strongest person in the world has fears no one imagines.But what is this feeling, of strength,this feeling of fear, that makes us who we are.What are these feelings, what are the emotions that go through us?Can any of it truly be explained? whether it may be, hate,fear,love, or strength. no one truly knows how in any way to describe such feelings.We can try to interpret them, try to put them into words.But even each indvidual person can not TRULY decribe there own feelings, truly put them into words that mean the same as the effect thats truly put on them in emotional times.So many emotions, so many complications, so many answers which are truly nothing but lies.