"Sonnet LV" Not marble nor the gilded monuments
Of princes shall outlive this powerful rhyme;
But you shall shine more bright in these contents1
Then unswept stone, besmeared with [untidy] time.
When wasteful war shall statues overturn, 5
And broils2 root out the work of masonry,
Nor Mars3 his sword nor war's quick fire shall burn
The living record of your memory.
'Gainst death and all-oblivious enmity4
Shall you pace forth; your praise shall still find room 10
Even in the eyes of all posterity5
That wear this world out to the ending doom.
So, till the judgment that yourself arise,
You live in this and dwell in lovers' eyes.
1. these contents: the lines of this poem.

2. broils quarrels, battles.

3. Mars: god of war in Roman mythology.

4. all-oblivious enmity: anything that would destroy your memory.

5. all posterity: the future.

How long will the subject of this poem "live" and why will the subject "live" so long?