Sixth Lesson

And were someone to become aware of living in the ways of air, then, if he becomes aware of it, then he observes that in effect all thinking, unknown to humanity, that in effect all thinking is none other than rarefied breathing. Thinking is rarefied breathing. The thoughts within which we live are through and through processes of rarefied breathing. Inflowing breathing, mid-breath pausing, and out-breathing are working, I might say, on the one side by groping about in our circulation of blood, although on the other side by the rarefied vibrations of the brain-organ. And as breathing continues on in the brain-organ it becomes thinking in the physical world. Sublimated breathing, breathing becoming sublime, is what thinking is.