I think I'll sleep, there is no sweeter thing

The epitaph on his grave of Edgar Lee Masters.

Good friends, let's to the fields…
After a little walk and by your pardon,
I think I'll sleep, there is no sweeter thing.
Nor fate more blessed than to sleep.

I am a dream out of a blessed sleep-
Let's walk, and hear the lark.

It is from his longer poem, To-morrow is My Birthday which is worth a read.