It was not unrequited love
That bade my 'wildered spirit rove;
'Twas not the pride disdaining life,
That with this mortal world at strife
Would yield to the soul's inward sense,
Then groan in human impotence,
And weep because it is not given
To taste on Earth the peace of Heaven.

-Percy Bysshe Shelley, The Retrospect, Stanza II.