DEAR fellow-artist, why so free
With every sort of company,
With every Jack and Jill?
Choose your companions from the best;
Who draws a bucket with the rest
Soon topples down the hill.
You may, that mirror for a school,
Be passionate, not bountiful
As common beauties may,
Who were not born to keep in trim
With old Ezekiel's cherubim
But those of Beauvarlet.
I know what wages beauty gives,
How hard a life her setvant lives,
Yet praise the winters gone:
There is not a fool can call me friend,
And I may dine at journey's end
With Landor and with Donne.

William Butler Yeats

http://www.poemhunter.com/poem/to-a-young-beauty/