Light is everywhere. It reveals and shapes the world we live in. Everything we see, every colour, form or texture we perceive, the atmosphere of a space, even the mood we are in, it all depends upon light. In the arts as well, many (if not most) disciplines use light as part of their practice. However, the practice of applying light to a space (called lighting or lighting design) is rarely acknowledged as an essential signifier. It seems to be taken for granted. In a wide spectrum of artistic practices light paradoxically lacks its own visibility and the theoretical framework to be recognized as an agency that generates meanings. That is why Reflecting Light wishes to build and broaden a living discursive practice around lighting. What do we mean by that?