How may different demands made upon external lighting such as sustainability, safety and beauty be combined with one another? As a supplier of external lighting we have reflected upon our activities in the context of this question. We have intensively concerned ourselves with the relationship between man and nature. The results are fascinating perceptions of the culture of form and design, of man-made locations in harmony with nature and the related question of what constitutes sustainable light. We have identified the following influencing factors that are particularly important to us. Let us together perceive and preserve the beauty and uniqueness of our planet.