Marc Faber writes on the December issue of the Market Commentary:
"High valuations, excessive debts, and extremely bullish sentiment do not necessary imply that a US stock market collapse is imminent. This especially not in an environment of unlimited money printing but if we believe in Selling Disciplines then the combination of high valuations and extremely positive sentiment strongly argues for reducing one’s exposure to US equities."
Read the full Gloom Boom Doom report at http://drmarcfaber.blogspot.com/2013/12/marcfaber-market-commentary-dec-2013-gloomboomdoom.html