6
Then let not winter's ragged hand deface
In thee thy summer, ere thou be distill'd:
Make sweet some vial; treasure thou some place
With beauty's treasure, ere it be self-kill'd
that use is not forbidden usury,
Which happies those that pay the willing loan;
That's for thyself to breed another thee
Or ten times happier, be it ten for one;
Ten times thyself were happier than thou art,
If ten of thine ten refigr'd thee;
Then what could death do, if thou shouldst depart,
Leaving thee living in posterity?
Be not self will'd, for thou art much to fair
To be death's conquest and make worms thine heir.

What I assume Shakespeare is getting at with Sonnet six is life is to precious to waste so have kids. "With beauty's treasure, ere it be self kill'd" seems to make reference to life as a beutiful treasure being wasted by someone who seems to have all the makings of making children yet simply refuses to. "Which happies those that pay the willing loan;" makes me think the object of the poem has sex but refuses to give over to fatherhood. Instead prefering to just do what makes him happy, which Shakespeare argues that if your going to buy the ticket you must take the ride "That's for thyself to breed another thee" says to me, That procreating is what sex is for. "Then what could death do, if thou shouldst depart,
Leaving thee living in posterity?" screams out to me `the fact that we all die and no one knows when they'll go and if you were to die you would be lost in the past had you never procreated.'
"To be death's conquest and make worms thine heir." again interjects that if the object of the poem were to die all that would be left of him is a grave.

13
O, That you were yourself, but, love, you are
No longer yours than you yourself here live:
Against this coming end you should prepare,
And your sweet semblance to some other give.
So should that beauty which you hold in lease
Find no determination; then you were
Yourself again after yourself's decease
When your sweet issue your sweet form should bear.
Who lets so fair a house fall to decay,
Which husbandry in honor might uphold
Against the stormy gusts of winter's day
And barren rage of death's eternal cold?
O, none but unthrifts! Dear my love, you know
You had a father: let your son say so.

Sonnet 13 seems to be a Sonnet of disgust. "O, That you were yourself, but, love, you are
No longer yours than you yourself here live:
Against this coming end you should prepare,
And your sweet semblance to some other give." Seems to be telling the object of the poem if you are not to give your seed to the world than someone who deserves it should have it. "Who lets so fair a house fall to decay" in my opinion is asking the object of the poem how could you have wasted such an oppritunity? "Which husbandry in honor might uphold
Against the stormy gusts of winter's day
And barren rage of death's eternal cold?" refers to the house as a refuge from death's winter as a metaphor for creating a family and to not make children is to not upkeep your shelter from death.
"O, none but unthrifts! Dear my love, you know
You had a father: let your son say so." Makes me think of Shakespeare shaking his head and saying "it's so easy, why not?" "O, none but unthrifts!" Is saying that if the object of the poem must have children or his life is a waste. "You had a father: let your son say so." In my opinion is calling the object of the poem selfish. In other words your having children is not only affecting you but those before and after you.