Contemplation: Thinking becomes contemplation when it moves not through accociation, but is directed. You work on a particular problem and you bracket out all associations. For example, science is based on contemplation…any logical thinking is contemplation. Contemplation is logical and rational.
Concentration: Concentration is staying at one point, not allowing your mind to move at all…it is allowed only to concentrate on one point.
Meditation: Meditation is a state of non-mind. The mind itself is not allowed to be and is the highest possibility. The text uses an example of the mind as a room of furniture and to remove the furniture is to create space, or absence of mind. I don’t understand the reasoning of freeing your mind? Likewise, what is the purpose of a empty room without furniture? I can better admire the space or wallpaper or lighting of the room with absence of furniture, but why? Does meditation equal enlightenment? Perhaps, more importantly, meditation creates mental discipline—controlling the most uncontrollable part of the body.
Heart Center: This can be developed. The heart and head centers determine our psychological and personality dispositions. For example, our heart center determines the ease in which we become more sensitive and develop love for each other
Head Center: This can be developed. The heart and head centers determine our psychological and personality dispositions. For example, our head center determines how we view the world, how logical and rational we are in our thinking and decisions.
Naval Center: This cannot be developed…it is just to be discovered, not developed. Likewise, there are techniques to develop the Heart and Head Centers, but you must uncover the naval center. The text addresses this by saying, “You are already a Buddha, you only have to know the fact.”