"The American obsession with Transformation isn’t new. It’s about as old as the nation. In the 19th century, Ralph Waldo Emerson preached about tapping into the “infinitude of man.” Norman Vincent Peale was an early bestselling self-help author with The Power of Positive Thinking in 1952. But it was Werner Erhard who created the first modern transformation when he founded est seminars in 1971. It’s a tribute to the power of his central concept that more than 20 years after he sold his ideas to a group of employees Landmark is still the natural first stop in any transformation tour."
January 1, 1970
https://en.wikiquote.org/wiki/Werner_Erhard