Henri Bergson was a major French philosopher. His ideas of process and change were influential in the early part of the 20th century, and were studied widely. Then he met Albert. In Paris on April 6, 1922 Henri Bergson squared-off with a rising star of physics—at issue was the true nature of time. One view prevailed and would come to shape how we understand one of nature’s enduring enigmas. The vanquished player made an early exit.

