Ch'an or Zen is the outcome of meditation. There are two "right" or "highest" purposes of Ch'an. The first purpose is to achieve "Dhyana." Dhyana is a combination of relaxation, concentration and calmness or tranquility. The second purpose is, using your very composed and tranquil mind, to observe clearly all the dharmas or phenomena externally and internally. As an outcome of Dhyana, you will be able to observe these phenomena very clearly because your "mental mirror" is very clear, for there are no more disturbances to veil it. Out of these observations will come Transcendental Wisdom, which in Sanskrit is called "Prajna."
The Sweet Drew of Ch'an