Walt Whitman

Leaves of Grass. 24. Autumn Rivulets. 18. To a Common Prostitute

Be composed—be at ease with me—I am Walt Whitman, liberal and
      lusty as Nature,
Not till the sun excludes you do I exclude you,
Not till the waters refuse to glisten for you and the leaves to
      rustle for you, do my words refuse to glisten and rustle for you.

My girl I appoint with you an appointment, and I charge you that you
      make preparation to be worthy to meet me,
And I charge you that you be patient and perfect till I come.

Till then I salute you with a significant look that you do not forget me.