Astrophil and Stella, Sonnet 16

In nature apt to like, when I did see,
     Beauties, which were of many carats fine,
     My boiling sprites did thither soon incline,
And, Love, I thought that I was full of thee:
But finding not those restless flames in me
     Which others said did make their souls to pine:
     I thought those babes of some pin's hurt did whine,
By my love judging what Love's pain might be.
     But while I thus with this young lion played,
Mine eyes (shall I say cursed or blessed?) beheld
Stella; now she is named, need more be said?
In her sight I a lesson new have spelled;
     I now have learned Love right, and learned even so,
     As who by being poisoned doth poison know.