The individual investor should act consistently as an investor and not as a speculator. This means ... that he should be able to justify every purchase he makes and each price he pays by impersonal, objective reasoning that satisfies him that he is getting more than his money's worth for his purchase.
Benjamin GrahamIt requires strength of character in order to think and to act in opposite fashion from the crowd and also patience to wait for opportunities that may be spaced years apart.
Benjamin GrahamBuy when most people, including experts, are pessimistic, and sell when they are actively optimistic.
Benjamin Graham