When we are grounded physically and mentally, we are keenly aware of our senses, yet disengaged at the same time.Without this ability to remain detached yet observant, it is not possible to meditate. Even though you need to be able to concentratein order to meditate, meditation is more than concentration. It ultimately evolves into an expanded state of awareness.When we concentrate, we direct our mind toward what appears to be an object apart from ourselves. We become acquainted with this object and establish contact with it.To shift into the meditation realm, however, we need to become involved with this object; we need to communicate with it. The result of this exchange, of course, is adeep awareness that there is no difference between us (as the subject) and that which we concentrate or meditate upon (the object). This brings us to the stateof samadhi, or self-realization.