Thirsting For Thirstiness

An untitled poem by Thomas Gataker found among his papers after his death:

I thirst for thirstiness; I weep for tears;
Well-pleased I am to be displeased thus;
The only thing I fear is want of fears,
Suspecting I am not suspicious.
I cannot choose but live, because I die;
And when I am not dead, how glad am I!
Yet, when I am thus glad for sense of pain,
And careful am, lest I should careless be,
Then do I grieve for being glad again,
And fear lest carelessness take care from me.
Amidst these restless thoughts this rest I find,
For those that rest not here, there's rest behind.