Hugh MacDiarmid: For ilka thing a man can be/leaves a million mair undune

For ilka thing a man can be or think or dae
aye leaves a million mair unbeen, unthocht, undune,
till his puir warped performance is, to all that micht ha'  been,
a thistle to the mune.

        --Hugh MacDiarmid (1892-1978) (real name Christopher Murray Grieve)

[Translation:

For every thing a man can be or think or do
still leaves a million more unbeen, unthought, undone,
Till his poor warped performance is, to all that might have been,
a thistle to the moon.]