Henry Ford believed that continuous learning was a key to staying young.  From his book "Today and Tomorrow", 1926

Listen to a podcast, Henry Ford the Father of Lean Manufacturing, I did with Mark Thompson of Alabama Technology Network, on Ford's book.

Another book for technical and inspirational ideas is Tim Ferriss's book: Standing On The Shoulders of Titans.

And here is another very interesting book.  The next wave in the technology revolution by Alex Tapscott:  Blockchain Revolution

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