Eugene Field - Some time

Last night, my darling, as you slept,
I thought I heard you sigh,
And to your little crib I crept,
And watched a space thereby;
And then I stooped and kissed your brow,
For oh! I love you so--
You are too young to know it now,
But some time you shall know!

Some time when, in a darkened place
Where others come to weep,
Your eyes shall look upon a face
Calm in eternal sleep,
The voiceless lips, the wrinkled brow,
The patient smile shall show--
You are too young to know it now,
But some time you may know!

Look backward, then, into the years,
And see me here to-night--
See, O my darling! how my tears
Are falling as I write;
And feel once more upon your brow
The kiss of long ago--
You are too young to know it now,
But some time you shall know.

Eugene Field

http://www.poemhunter.com/poem/some-time/