" The more general difficulty with thought is that thought is very active, it's participatory. And fragmentation is itself a symptom of the more general difficulty. Thought is always doing a great deal, but it tends to say that it hasn't done anything, that it is just telling you the way things are. But thought affects everything. It has created everything we see in this building. It has affected all the trees, it has affected the mountains, the plains and the farms and the factories and science and technology. Even the South Pole has been affected because of the destruction of the ozone layer, which is basically due to thought. People thought that they wanted to have refrigerant—a nice safe refrigerant—and they built that all up by thinking more and more about it. And now we have the ozone layer being destroyed. "

― David Bohm , Thought as a System