Before there was Wikipedia, there were encyclopedias — and Saturday marks the 300th birthday of the father of one of the world's most important.

Eighteenth-century French philosopher Denis Diderot was the driving force behind the Encyclopédie, one of the first compendiums of human knowledge of its time. The anniversary of his birth has prompted calls for Diderot to receive France's highest honor: have his remains reinterred in Paris' Pantheon, a mausoleum of sorts for France's national heroes...