Twenty-two years ago, Wharton professor Jeremy Siegel asserted in his book Stocks for the Long Run that equities were the best long-term investment and that buying and holding through volatility is the best approach for investors. This according to an article in last week’s Wall Street Journal.

Siegel’s research, which covered more than two centuries, showed that stocks generated 6.7% in annual returns (inflation-adjusted) compared to 3.6% for U.S. government bonds. He expects the post-election rally to continue and, the article says, believes “stocks will respond well to the prospect of more-favorable corporate taxes and less regulation.” That’s not to say, however, that the professor doesn’t see problems in the broader economy. “The biggest myth on Wall Street today is that it’s central banks that have driven global interest rates to [or near] zero.” Rather, he said, “it’s the economy that’s the cause of zero.”

Notwithstanding, Siegel stands by his credo that there is no more stable asset class than equities. While some investors, the article claims, are afraid of “buying into a bubble,” Siegel was quoted as saying, “There’s no bubble today. There hasn’t been for years.” He is also an advocate of passive investing and believes, “there are just too many people who think they can beat the market. I shed no tears for those who think they can.”