In The Little Book That Builds Wealth author Pat Dorsey - the Director of Equity Research for leading independent investment research provider Morningstar Inc. - reveals why competitive advantages or economic moats are such strong indicators of great long-term investments and examines four of their most common sources: intangible assets cost advantages customer-switching costs and network economics. Along the way he skillfully outlines this proven approach and reveals how you can effectively apply it to your own investment endeavors.