Samuelson's inscription (spelling correction):

RELIGION IS A CODE OF
MORALS HUMANS TO LIVE BY
NO MORE HELL IS THERE ON THIS
FAIHT XXXXXX
WE MAKE OURSELFS
LIFETIME(.) NOTHING
PROVEN AFTER DEATH BY PREAST (PRIEST)
OR SCIENTIST?

Interpretation:

"Religion is a guide for humans to live their lives by.  However, neither priest nor scientist has proof that there is an afterlife so we should live our lives to the fullest.  This may well be all there is to our miserable existence.  Hell is something we make for ourselves, not something made by the devil."

Send in your own interpretation.