This investigation of truth pertaining to mind and matter is not merely for curiosity, but to change habit pattern at deepest level of the mind. As you proceed, you realize how the mind influences matter, and how matter influences the mind.
You also begin to understand the formation of the mind-matter structure: how matter helps matter to arise and dissolve. Similarly, you experience how mind helps matter to arise and dissolve. You will also notice that at times matter arises from the mental conditioning of the past, that is, the accumulated sankharas (mental conditioning) of the past.
Thus this kamasava turns into a craving of passion at the mental level, which again stimulates kamasava, a flow of passion at the physical level. One starts influencing the other, starts stimulating the other, and the passion keeps on multiplying for minutes together, at times for hours together. The behavior pattern of the mind of generating passion is strengthened because of the repeated generation of passion.
You may call yourself a Hindu, or a Muslim, or a Buddhist, or a Jain, or a Christian - it makes no difference - the process is such, the law is such, that it is applicable to one and all. There is no discrimination.
The intellect has its own limitation. You cannot realize the ultimate truth merely at the intellectual level.
The ultimate truth is limitless, infinite, while the intellect is finite. It is only through experience that we are able to realize that which is limitless, infinite.
Even those who have accepted this law of nature intellectually are not able to change the behavior pattern of their minds. As a result, they are far away from realization of the ultimate truth.
You feel a sensation - pleasant, painful, whatever it is - and with the feeling of this sensation, you keep reacting. At the depth of your mind you keep reacting with craving, with aversion....and the process of multiplication continues. You cannot stop it because there is such a big barrier between the conscious and the unconscious mind - or rather between the surface of the mind and the depth of the mind.
When you practice Vipassana you break this barrier. Without Vipassana the barrier remains, barrier of ignorance of what is happening within.
Sensations are there in your body every moment. Every contact (with the outside world) results in a sensation. Every thought, a memory, a desire arises with a sensation, a biochemical flow. The deepest part of the mind is continuously in contact with these bodily sensations, not with objects of the outside world. This isn't a philosophy, it is the actual truth which can be verified by one and all.
And by observing these sensations with equanimity you start realizing the characteristic of arising and passing, the impermanence in everything. With this experiential understanding you start to change the habit pattern of the mind.
The vicious cycle is broken: your mind was reacting to the chemical process which was manifesting itself as a sensation, and as a result, for hours together, your mind was flooded with a particular impurity, a particular defilement. Now it gets a break for a few moments, a few seconds, a few minutes. As the old habit of blind reaction becomes weaker, your behavior pattern is changing. You are coming out of your suffering.