and is keenly interested in holistic alternative medicine and healing thinking. He is also interested in developing a process language in which the verb, not the noun or pronoun, plays the primary role. In 1995, he gave a talk on science and spirituality in a symposium at the 60th birthday celebrations of the Dalai Lama. There he discussed the relation between science and spirituality with special reference to life science. Plant morphology, science and philosophy Sattler's contributions to plant morphology include the empirical, conceptual, theoretical, and philosophical. Together with his coworkers he has contributed a wealth of empirical data on shoot and leaf development and flower development. His empirical findings led him to revision fundamental concepts of comparative morphology. He emphasized that the concepts of homology and homeosis (replacement) should also include partial homology, partial homeosis, and quantitative homology. These revisions led him to question the theoretical and philosophical foundations of comparative morphology. In contrast to mainstream morphology, which tends to be categorical, he provided evidence for a continuum morphology. Together with Bernard Jeune, he demonstrated mathematically a continuum of plant forms that spans not only organ categories such as root, stem, and leaf, but also different hierarchical levels of organ systems, organs, and tissues. Rutishauser and Isler regard him as one of the major contemporary proponents of continuum morphology (or Fuzzy Arberian Morphology: FAM). Furthermore, he developed a dynamic morphology or process morphology that supersedes the structure/process dualism inherent in almost all biological research. According to process morphology, structures do not have process(es), they are process(es). He used principal component analysis and the concept of morphological distance to provide a dynamic approach to structure as process, This approach has placed comparative morphology on a more objective plane The major focus of his philosophical contributions to plant morphology and our understanding of reality has been on process philosophy, integral philosophy, holism, contextualism, perspectivism, and complementarity. Besides hierarchy (holarchy), he underlines the importance of complementary perspectives such as holism as undivided wholeness, Yin-Yang, continuum and network views. Besides Aristotelian either/or logic, he emphasizes the importance of fuzzy logic. He explores how either/or logic can lead to conflict and even war, whereas fuzzy logic and Yin-Yang thinking can be healing because they connect what either/or logic has torn apart. Finally, he also emphasizes that beyond all perspectives is the unnamable source, emptiness (in the Buddhist sense), mystery, which is of ultimate importance