Dune

There is considerable danger that a man will be crazy between dinner and supper; but it will not directly answer any good purpose that I know of, and it is just as easy to be sane. - Thoreau

A grain of madness has the relevance of sand in the desert.

With the benefit of capturing footprints ...

Author's Note

"If one listens to the faintest but constant suggestions of his genius, which are certainly true, he sees not to what extremes, or even insanity, it may lead him; and yet that way, as he grows more resolute and faithful, his road lies." - Thoreau