Analysis of Sonnet # 203

Let me a youth today, no older bring.
A flesh untouched, acquainted not with men.
That time when she appears an ever spring.
Her V a paper ne'er on has writ a pen
To turn her eyes away from tricky beauty.
Her teach that the outside than love not better.
So, she becomes one just and kind a lady
Who lowers looks and care receives true lover.
Let me a youth untouched possess my own;
Her teach to never have such greedy sight.
And if I let her go when woman grown
Hopes have  she'll see the heart and thus judge right.
      But I my purpose will not really try
      Unless sixteen, at least, the butterfly.