At the time, we let it pass without taking notes, but it has stuck: seen on YouTube, said as an aside, someone at a seminar proffered (alluding to Klein's Leap into the void)
... a leap into the world.
Below, Yves Klein breaks through (1960) and sees ahead ... Houdini (1907).
Below, Yves Klein breaks through (1960) and sees ahead ... Houdini (1907).