Some tear quotes:

I laugh because I must not cry. That is all. That is all. – Abraham Lincoln
What soap is for the body, tears are for the soul. –  Jewish proverb 

Behind the smile is a dry tear …

Behind a strong saying is a weak girl.

Behind the lighten eyes is a broken heart

A faith … will be hard to get back again,
A true love … will be a luxurious gift to me.

Friends are all I have now.
Smile …
Leave everything behind

Just walk away.
From the mess called ” LOVE ”

Science of Tears.

Tears flow from tear glands called lacrimal glands into your eyes through tiny tear ducts. The tear glands are located under your upper lids, and when stimulated, produce tears to form a thin film over your eyeballs. Human is the only kind who is supposted to have experienced emotional tears. The salty fluid is always flowing from the tear glands irrespective of our emotions.

Apart from emotional or Psychic tears we also have another format of tears named the reflective tears. When our eyes are irritated by a dust or hurt.

Used tears then drain down into two tiny openings on the brim of your upper and lower eyelids at the inner edge of your eyes, If there are too many tears, they will overflow your lower lid and run down your cheeks.

Perhaps our eyes need to be washed by our tears once in a while, so that we can see Life with a clearer view 
The tears fall, they’re so easy to wipe off onto my sleeve, but how do I erase the stain from my heart?