[Sample: Terence McKenna]
"As I stretched and stood up on the flat stone where I had been sitting, I noticed that the line of fog seemed to have grown darker, and now seemed to be churning or rolling in place. I watched very carefully as the rolling line of darkening mist split into two parts and each of these smaller clouds also divided apart. It took only a minute or so for these changes to be executed, and I was now looking at four lens-shaped clouds of the same size lying in a row and slightly above the horizon, only a half mile or so away. A wave of excitement swept through me followed by a wave of definite fear. I was glued to the spot, unable to move, as in a dream. As I watched, the clouds recoalesced in the same way that they had divided apart, taking another few minutes. The symmetry of this dividing and rejoining..."