It will be noticed that some of the meditation exercises given in The Wisdom of the Overself concern the re-education of character and involve the use of mental images and logical thoughts. The aim of ordinary yoga being to suppress such images and thoughts, it is clear that the philosophic yoga does not limit itself to such aims. It certainly includes and uses them when and where necessary, as in some of the other exercises, but it does not make them its ultimate ones. On the other hand, the images and thoughts which it uses are not quite the ordinary kind. Brought into being within the atmosphere of detached contemplation or intense concentration as they are, inspired at certain moments by the light and power of the Overself and directed towards the purest impersonal goal as they should be, they do not interfere with the philosophic student's quest, but, on the contrary, actually advance it further.
-- Notebooks Category 20: What Is Philosophy? > Chapter 4: Its Realization Beyond Ecstasy > # 14