To concentrate is not to meditate, even though that is what most of you do, calling it meditation. And if concentration is not meditation, then what is? Surely, meditation is to understand every thought that comes into being, and not to dwell upon one particular thought; it is to invite all thoughts so that you understand the whole process of thinking.
If you were only to listen, it becomes meditation. Without meditation you cannot hear. What is the meaning of meditation? Meditation exists only where mind is not; where the internal dialogue is gone.
Regarding this Dhamma, it is not something that we can simply talk about or take another's word for it. We need to develop meditation so that the understanding arises clearly within oneself. It is not the case that merely by listening to another's explanation our defilements will disappear. When we gain some understanding we need to chew on it again so that we see it for ourselves with certainty: paccattam.
When the mind goes beyond the thought of 'the me,' the experiencer, the observer, the thinker, then there is a possibility of a happiness that is incorruptible.
Meditation is not the pursuit of an invisible path leading to some imaginal bliss. The meditative mind is seeing, watching, listening, without the word, without comment, without opinion, attentive to the movement of life in all its relationships throughout the day.