Riddle Quotes

To be happy to be sad and sad to be happy is to sing an echo in that beautiful language called Sorrow.

This thing all things devours:Birds, beasts, trees, flowers;Gnaws iron, bites steel;Grinds hard stones to meal;Slays king, ruins town,And beats high mountain down.

What can promote innocent mirth, and I may say virtue, more than a good riddle?

The beginning of Eternity, The end of time and space, The beginning of every end, And the end of every place. What am I?