There is no cause so right that one cannot find a fool following it

Goodbye, my friend, goodbye
My love, you are in my heart.
It was preordained we should part
And be reunited by and by.
Goodbye: no handshake to endure.
Let's have no sadness — furrowed brow.
There's nothing new in dying now
Though living is no newer.

Goodbye, my friend, goodbye by Sergei Aleksandrovich Esenin

This poem was written in his own blood and given to a friend the day before he hung himself.