precious tears. . .

Before got a person said, 
if you never do fault, you cannot drop your tears. 
Before got a person said, 
if you never do fault, you drop your tears mean that you think you fault. 
Before also got a person said, 
your tears are very precious so think careful before you drop your tears. . .

BUT. . . . . . 
who can promise that you wont drop your tears when you sad, when you hurt????

i think the answer will be: nobody. . . . . .