The History of Ideas

I talk a lot about ideas here, and even sold quite a few at my garage sale a few weeks back.  I wonder what I would have gotten for this, the Dictionary of the History of Ideas.  Set aside a few hours and peruse this unbelievable digital version of Philip P. Wiener's book from the early 70's, "The Dictionary of the History of Ideas: Studies of Selected Pivotal Ideas."  Really great reading.