I think many people have said this. Buckminster Fuller
was one of them.
To me, it means that truth, the universe, etc., are processes and not static things.
On some intuitive level, the following may make sense: This phrase takes the two heads of a paradox, about to slam together and create a black hole of meaninglessness, and shifts them so that they miss each other and have to make one more pass. And one more, and one more...