All the real money in investment will have to be made—as most of it has been in the past— not out of buying and selling but out of owning and holding securities, receiving interests and dividends therein, and benefiting from their long-term increases in value. Hence stockholder's major energies and wisdom as investors should be directed toward assuring themselves of the best operating results from their corporations. This in turn means assuring themselves of fully honest and competent managements.

Chapter I, What the Intelligent Investor Can Accomplish, p. 17 - The Intelligent Investor: The Classic Text on Value Investing (1949)