It does not do to leave a live dragon out of your calculations, if you live near him. - J. R. R. Tolkien

It cannot be seen, cannot be felt,
Cannot be heard, cannot be smelt,
It lies behind stars and under hills,
And empty holes it fills,
It comes first and follows after,
Ends life, kills laughter.

Ho! Ho! Ho! To the bottle I go
To heal my heart and drown my woe
Rain may fall, and wind may blow
And many miles be still to go
But under a tall tree will I lie
And let the clouds go sailing by

There, peeping among the cloud-wrack above a dark tor high up in the mountains, Sam saw a white star twinkle for a while. The beauty of it smote his heart, as he looked up out of the forsaken land, and hope returned to him. For like a shaft, clear and cold, the thought pierced him that in the end the Shadow was only a small and passing thing: there was light and high beauty for ever beyond its reach.