My money, I should add, is where my mouth is : what I advise here is essentially identical to certain instructions I’ve laid out in my will. My advice to the trustee could not have been more simple : put 10% of the cash in short-term government bonds and 90% in a very low-cost S&P 500 index fund (I suggest Vanguard’s). I believe the trust’s long-term results from this policy will be superior to those attained by most investors – whether pension funds, institutions, or individuals – who employ high-fee managers.