Gregory Stock is an American biophysicist, entrepreneur, and author. He is the former director of the Program on Medicine, Technology, and Society at the UCLA School of Medicine. He is the author of several books, including The Book of Questions, Metaman, and Redesigning Humans. Stock is a proponent of transhumanism, a movement that seeks to use technology to enhance human capabilities. He has been featured in numerous publications, including The New York Times, The Wall Street Journal, and The Economist. He is a frequent speaker at conferences and universities around the world. Stock is a passionate advocate for the responsible use of technology to improve the human condition.