Skyscrapers, I am told, cannot be built in London because they need to be founded on rock. Mill's doctrines, like a skyscraper founded on clay, were shaky because the foundations were continually sinking. ... To put the matter in another way: morals and intellect were perpetually at war in his thought, morals being incarnate in Mrs. Taylor and intellect in his father. If the one was too soft, the other was too harsh. The amalgam which resulted was practically beneficent, but theoretically somewhat incoherent.
Source: Bertrand Russell: John Stuart Mill，1955.
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