During sitting I sometimes see light, colors, or images. Is this progress? The archive's teacher seems to both name it and dismiss it, and this site's problem page says not to chase it — but what does it actually mean?
The short answer: light and imagery during sitting are named in the earliest sources, the tradition’s counsel about them is uniform — notice without grasping, neither chase nor fear — and the archive’s teacher adds the sharpest version of the same rule: whatever appears, ignore it, it is not attainment. What lights are not, on the evidence this site holds, is a progress marker. And if they persist outside sitting or distress you, they are a medical matter, not a meditation matter.
What the sources say, layer by layer
- The source-text layer: the phenomenon is ancient. The seeing-light page holds the earliest statement: in the Zhuangzi’s fourth chapter, the passage that defines the fasting of the mind turns to the settled mind and says — 瞻彼阕者，虚室生白，吉祥止止 — look into the closed room: the empty room gives rise to white light, and good fortune rests there. The traditional reading takes the light as the mind’s own clarity appearing when emptied; some modern readers take it more literally as a description of visual phenomena in deep quiet. The site keeps both readings without settling them — because the passage itself does: the light is invited to rest, not chased.
- The tradition layer: the counsel is uniform. The same page holds the manuals’ transmitted rule — do not grasp at scenes (勿贪景象) — and the Neiguan jing’s frame: 内观己身，澄其心也, inner contemplation is for clarification, not acquisition. Whatever appears, the manuals’ job for it is the settled clarity around it, never the image itself. The site’s emptiness pages hold the general claim behind the rule: phenomena that arise in stillness are passed through, not collected, because grasping turns a settled mind back into a pursuing one.
- The archive layer: the teacher demotes it. The EXP-020 file preserves the site’s sharpest single episode on this question: a practitioner reports a night of warmth, four entries, entries while lying down, and a Buddha image with glowing eyes just before entry — and the teacher’s correction is structural: that is not the first dhyāna, it is shamatha, stillness; whatever appears in between, ignore it and do not fear — at this stage even demonic disturbance is impossible. The glowing-eyed image was ignored, and survived. The episode is cross-linked to the seeing-light page as its clearest traditional-world counterpart — and to the warmth question, because the same correction covers both: warmth and lights do not equal attainment, they equal stillness doing its normal work.
- The honesty layer: what the site does not claim. No dedicated research on visual phenomena in Daoist sitting was found in this site’s verification work, and the pages say so rather than cite anything as if it did. What contemporary communities describe — hypnagogic-like imagery, phosphene-like light from relaxed closed eyes, visual memory surfacing when outer input drops — is the same events in a different vocabulary, registered as observation, not explanation. The EXP-016 file holds the archive’s own honesty benchmark: the teacher’s “I have not achieved it myself,” which is exactly what a responsible account of lights sounds like.
The two boundaries that matter
- Lights are not a progress marker — on any layer this site holds. The tradition says pass through them; the teacher says they are stillness, not attainment; the site’s progress page holds its own standard (progress is measured in months of the same practice, not in what appears on the cushion). If a light is chased as proof, all three layers agree: the chasing is the error.
- Persistent or distressing visual symptoms are a medical matter. The seeing-light page’s hard edge: light or images that continue off the cushion, disturb sleep, or interfere with daily life warrant professional evaluation — the tradition’s texts say nothing about neurological or ophthalmological conditions, and neither does this page. Not medical advice; it is the boundary the site draws in both directions.