25% stocks, 25% bonds, 25% gold, 25% cash?
(That's literally what the "Fail-Safe Investing" book boils down to. http://en.wikipedia.org/wiki/Fail-Safe_Investing)
" It might seem that a Permanent Portfolio
containing these four contradictory investments would
be neutralized: As one element rose, another would fall
and nothing would be gained.
On a day-to-day basis, that can be true.
But over broad periods of time, the winning investments
add more value to the portfolio than the losing
investments take away."