Prayer and meditation are as necessary for the life of the spirit as fresh air, food, and sunlight are for the body. If we think of prayer as talking to God, with or without words, our own or those of others, then we can think of meditation as listening to God — an attitude of open, silent receptiveness.
All final spiritual reference is to be the silence beyond sound. The word made flesh is the first sound. Beyond that sound is the transcendent unknown, the unknowable. It can be spoken of as the great silence, or as the void, or as the transcendent absolute.