I am the family face;
Flesh perishes, I live on,
Projecting trait and trace
Through time to times anon,
And leaping from place to place
Over oblivion.

The years-heired feature that can
In curve and voice and eye
Despise the human span
Of durance -- that is I;
The eternal thing in man,
That heeds no call to die

Thomas Hardy

http://www.poemhunter.com/poem/heredity-2/