Thought is matter

Those who think a great deal are very materialistic because thought is matter. Thought is matter as much as the floor, the wall, the telephone, are matter. Energy functioning in a pattern becomes matter. There is energy and there is matter. That is all life is. We may think thought is not matter but it is. Thought is matter as an ideology. Where there is energy it becomes matter. 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. 

(JKRISHNAMURTI, Freedom from the Known,101)