Good and Bad Children

Children, you are very little, And your bones are very brittle; If you
would grow great and stately, You must try to walk sedately.
You must still be bright and quiet, And content with simple diet; And
remain, through all bewild'ring, Innocent and honest children.
Happy hearts and happy faces, Happy play in grassy places-- That was
how in ancient ages, Children grew to kings and sages.
But the unkind and the unruly, And the sort who eat unduly, They must
never hope for glory-- Theirs is quite a different story!
Cruel children, crying babies, All grow up as geese and gabies, Hated,
as their age increases, By their nephews and their nieces.