George Santayana - Sonnet VII

I would I might forget that I am I,
And break the heavy chain that binds me fast,
Whose links about myself my deeds have cast.
What in the body’s tomb doth buried lie
Is boundless; ’tis the spirit of the sky,
Lord of the future, guardian of the past,
And soon must forth, to know his own at last.
In his large life to live, I fain would die.
Happy the dumb beast, hungering for food,
But calling not his suffering his own;
Blessèd the angel, gazing on all good,
But knowing not he sits upon a throne;
Wretched the mortal, pondering his mood,
And doomed to know his aching heart alone.

George Santayana

http://www.poemhunter.com/poem/sonnet-vii-12/