Go and Catch a Falling Star

I like this poem. It's used in my favorite book; Howl's Moving Castle by Diana Wynne Jones. I still haven't quite figured it out. 

Go and Catch a Falling Star
by John Donne

Go and catch a falling star,
Get with child a mandrake root,
Tell me where all past years are,
Or who cleft the devil's foot,
Teach me to hear mermaids singing,
Or to keep off envy's stinging,
And find
What wind
Serves to advance an honest mind.

If thou be'st born to strange sights,
Things invisible to see,
Ride ten thousand days and nights,
Till age snow white hairs on thee,
Thou, when thou return'st, wilt tell me,
All strange wonders that befell thee,
And swear,
No where
Lives a woman true, and fair.

If thou find'st one, let me know,
Such a pilgrimage were sweet;
Yet do not, I would not go,
Though at next door we might meet;
Though she were true, when you met her,
At last, till you write your letter,
Yet she
Will be
False, ere I come, to two, or three.

The ant(2) and the grasshopper, Shooting Stars

Hey, have you heard that story of the ant and the grasshopper? It's a story by Aesop.
And although I've read it and understood the moral, I still relive a different opinion, as I am. Usually.
The grasshopper didn't actually do anything wrong. Is it so wrong to sing?
And the ant didn't do anything wrong, either. But even though it will live a long time, what's the point if he will never sing? Never take a break, never being happy.
See, I think that although the grasshopper will die of hunger, that at least his life was like a shooting star. Isn't that why we watch for shooting stars? Because their life is short, but they grant wishes.
I don't need a long life, what I want is a life that can shine like that, even if it's only for a short while.