One Millimeter

If you're having some trouble finding,
What some call, "a cloud's silver lining"
Remember that it,
Could be a millimeter thick...
Just a millimeter. And it will be shining.

And if you still cannot find it,
Look over the cloud, under, behind it.
Look close as you can,
(Even use another man!)
Move everything that could have confined it.

Once you suddenly catch sight,
Of a flash of a bright silver light,
The cloud's silver lining,
Of which you have been pining...
Will (hopefully) ne'er leave your sight!

^.^