Board Thread:Warhammer 40k General Discussion/@comment-2253300-20130211000751/@comment-7186329-20130417184948

And humanity that sustains them all.

Chaos would definetly drive any one it meets insane. It is such a scorrupting force, that even if a lifelong nun were to become exposed to the influence of Chaos, she would go work at strip joint or start a massacre.

The Space marines ,and some imperial guardsmen have and do withstand the forces of Chaos, and it`s contagious insanity. Other than the organ transplants that SM go through, after which they are no longer anatomically human, the SM are subject to intense psycho therapy and hypnosis. The Librarians of a chapter are like psychotherapists, which monitor and maintain the sanity and mental `stability` of the Space Marines.

They SM are fanatical killing machines. Thank The Emperor we are not Eldar or Tau to have the Space Marines as enemies, and thank Him again they are on out side.

As crazy as the average inquisitor may be, at the least by modern standarts,not the Imperiums, i would wager they are all extremely intelligent and capable.