In the late 1980s, philosopher George Walsh gave this six-hour course on Judaism and Christianity. With his characteristic erudition and humor, he covers the history and ideas of these two uber-influential religions.  How did the most influential religion of all time spring out of the faith of a weak people on the periphery of the civilized world?  What do the two religions still have in common?  How – and when – did they diverge?  Whatever your views, Walsh knows much that you do not.