Sonnet IV:

Wilt spend thou Nature’s battle unaware
And lend thy loveliness when thou agree
To legacy–or Heaven as thou dare?
This battle, free to lose;  for the degree

That this abuse could bounteous appear;
To use this matchless contest; wouldst thou care
To give thy future someone to revere?
To live, what legacy wouldst thou prepare?

Thyself, as though alone reflected are;
No epigone–when fall thyself so near–
To traffic nature’s callDeceive and scar
This battlement to leave to thy frontier!

In this way, bring thee over from afar,
And what might be thine image, to a star.

This sonnet is part of a short, or
possibly at some point, very long
sequence; click here to read it all:

Sonnet IV: (William Shakespeare)

Unthrifty loveliness, why dost thou spend
Upon thyself thy beauty’s legacy?
Nature’s bequest gives nothing but doth lend,
And being frank she lends to those are free.

Then, beauteous niggard, why dost thou abuse
The bounteous largess given thee to give?
Profitless usurer, why dost thou use
So great a sum of sums, yet canst not live?

For having traffic with thyself alone,
Thou of thyself thy sweet self dost deceive.
Then how, when nature calls thee to be gone,
What acceptable audit canst thou leave?

Thy unused beauty must be tomb’d with thee,
Which, used, lives th’ executor to be.