Happy hearts and happy faces

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
Their 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.