“Thought is subtle matter. A thought is as much solid as a piece of stone. You may die, but your thoughts can never die. They have form, size, shape, colour, quality, substance, power and weight. A spiritual thought has yellow colour; a thought charged with anger and hatred is of a dark red colour; a selfish thought has a brown colour; and so on. A Yogin can see directly with his inner Yogic eye all these thoughts.
The stronger the thoughts, the earlier the fructification. Thought is focussed and given a particular direction and, in the degree that thought is thus focussed and given direction, it is effective in the work it is sent out to accomplish.”