So what is meditation? Surely meditation is understanding - meditation of the heart is understanding. How can there be understanding if there is exclusion? How can there be understanding when there is petition, supplication? In understanding there is peace, there is freedom; that which you understand, from that you are liberated. Merely to concentrate or to pray does not bring understanding. Understanding is the very basis, the fundamental process of meditation. You don't have to accept my word for it but if you examine prayer and concentration very carefully, deeply, you will find that neither of them leads to understanding. They merely lead to obstinacy, to a fixation, to illusion. Whereas meditation, in which there is understanding, brings about freedom, clarity and integration.
The First and Last Freedom
Question and Answers 'On Prayer and Medititation'