In the longer run and for wide-reaching issues, more creative solutions tend to come from imaginative interdisciplinary collaboration.
Robert J. ShillerThe good news is that, at least in economics, I've seen movement away from its overemphasis on mathematical models of purely rational behavior to a more eclectic and commonsense approach: research that is, among other things, more respectful of insights from psychology.
Robert J. ShillerStock prices are likely to be among the prices that are relatively vulnerable to purely social movements because there is no accepted theory by which to understand the worth of stocks....investors have no model or at best a very incomplete model of behavior of prices, dividend, or earnings, of speculative assets.
Robert J. Shiller