I thank Dr. Ortega for clarifying the location of the Ether Monument in the Boston Public Garden. In fact, no living person is better suited to point out my oversight. In 2006, Dr. Ortega published a book entitled Written in Granite: An Illustrated History of the Ether Monument. He has also contributed to the restoration of the Ether Monument. In 2004, when the City of Boston undertook a complete restoration of the monument, an endowment fund was created to maintain the structure. The proceeds from Dr. Ortega’s book have been directed to the endowment fund, helping to support the preservation of the statue.

In the 2020 John W. Severinghaus Lecture on Translational Science, I described the Ether Monument as a symbolic reminder of “relentless innovation.” Only through such innovation will we...

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