On Fri, 10 Feb 2012 09:03:38 -0000, Keith W wrote:

As the pioneer Air mail pilot E. Hamilton Lee said

Don't be a show-off.
Never be too proud to turn back.
There are old pilots and bold pilots, but no old, bold pilots.

Which he absconded from Terence McKenna who proffered:

"There are old shamans
There are bold shamans
But there are no old, bold shamans."

Suggesting a hint of bravery and good sense go hand in hand when hand
to mouth with psychoactive plants.