We are not sure of sorrow, 
And joy was never sure; 
To-day will die tomorrow; 
Time stoops to no man’s lure; 
And love grown faint and fretful, 
With lips but half regretful 
Sighs, and with eyes forgetful 
Weeps that no loves endure. 
 
From too much love of living, 
From hope and fear set free, 
We thank with brief thanksgiving 
Whatever gods may be 
That no life lives for ever, 
That dead men rise up never; 
That even the weariest river 
Winds somewhere safe to sea.
Algernon Charles Swinburne
http://www.poemhunter.com/poem/swan-song-11/