I depart as air . . . . I shake my white locks at the runaway sun,
I effuse my flesh in eddies and drift it in lacy jags.
I bequeath myself to the dirt to grow from the grass I love.
If you want me again look for me under your bootsoles.
You will hardly know who I am or what I mean,
But I shall be good health to you nevertheless,
And filter and fibre your blood.
Failing to fetch me at first keep encouraged,
Missing me one place search another,
I stop somewhere waiting for you.
-Walt Whitman, from the end of Leaves of Grass