"There exists, however, among the writings of the East, a classic text on meditation which gets to the heart of the matter, stating clearly and concisely just what meditation is. This text is held by tradition to contain the very essence of the science of meditation, received from the ancient Indian sages, and distilled through long ages of meditation experience. It has stood the test of time, and although it is now preserved in the Hindu tradition, its teachings on meditation are so universal that they have been taken over into the Buddhist tradition as well."