Thought is matter as much as the floor, the wall, the telephone, are matter. Energy functioning in a pattern becomes matter. That is all life is … Matter and energy are interrelated. The one cannot exist without the other, and the more harmony there is between the two, the more balance, the more active the brain cells are. Thought has set up this pattern of pleasure, pain, fear, and has been functioning inside it for thousands of years and cannot break the pattern because it has created it.
Freedom From The Known (1969)