I review my career from its academic beginning to my recent retirement. I grew up and studied chemical engineering in New York City. My initial failure to understand thermodynamics the way it had been taught, evidenced by the difficulty I had when starting graduate school, led me years later to write a textbook on the subject that is now in a fifth edition, in addition to other books I have written. My research areas have included molecular simulation, statistical- and quantum mechanical–based methods, and a variety of experimental thermodynamic measurements. In addition, I have been a consultant in traditional chemical engineering areas, as well in nontraditional areas, such as assisting in the design of a heat shield for interplanetary exploration, the destruction of armed chemical weapons, and the cleanup of nuclear weapons production facilities.

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