"A great civilization is not conquered from without until it has destroyed itself within. The essential causes of Rome's decline lay in her people, her morals, her class struggle, her failing trade, her bureaucratic despotism, her stifling taxes, her consuming wars" -- historian Will Durant in "Caesar and Christ" (1944).
Will Durant's (pictured here) and his writing and life partner Ariel Durant's The Story of Civilization is a college education in 11 volumes. OK, I know it sounds a little heavy, but the writing is so gripping, it all reads like a novel. They take an integrative approach to history, and weave politics, visual art, letters together in a way that sings. A great way to become a cultured human being -- and win at Jeopardy!