I'm tired of crying...

When you are sorrowful look again in your heart, and you shall see that in truth you are weeping for that which has been your delight.
~Kahlil Gibran

Tears are the safety valve of the heart when too much pressure is laid on it.
~Albert Smith

Tears are the silent language of grief.
~Voltaire, A Philosophical Dictionary

Unless you have been very, very lucky, you have undoubtedly experienced events in your life that have made you cry. So unless you have been very, very lucky, you know that a good, long session of weeping can often make you feel better, even if your circumstances have not changed one bit.
~Lemony Snicket

There is a sacredness in tears. They are not the mark of weakness, but of power. They speak more eloquently than ten thousand tongues. They are messengers of overwhelming grief... and unspeakable love.
~Washington Irving