How come are human beings religious or spiritual? Current scientific results suggest both genetics and environment contribute to its formation, while, in this essay, I have further elaborated it to a dynamic network which is essential to the Religiosity/Spirituality of humankind. From a Buddhist perspective, I have then used several Buddhist terms or ideas to respond to some issue in this network distinctively, such as using interdependent arising to comment on the general understanding of formation of R/S, regarding karma seeds as the origin of R/S related genetic information, and the best environment for R/S as well as the unique human nature in the Buddhist view, the Buddhist attitude towards biotechnology, and which way should we consider and choose to enhance and develop human R/S, via education or biotechnology; I have also showed the necessity of a refined evaluation both of R/S in general and for Buddhism or other traditions. By this attempt, it is hoped that such distinctive Buddhist understandings will enrich the open-minded dialog between science and religion through, especially in regard to Religiosity / Spirituality. 人類為何有宗教性／靈性呢？當代科學研究提示遺傳和環境因素都在人類的宗教性／靈性的形成過程中起到了重要作用，筆者在本文中提出了一個對於人類宗教性／靈性非常關鍵的動態網狀系統。隨後，筆者用數個佛學概念、理念從佛學的角度回應了對這個網狀系統的獨特理解，例如用緣起來回應對宗教性／靈性形成的基本理解、將業種子視為宗教性／靈性相關的遺傳信息的根源、佛學視角下最利於培養宗教性／靈性的環境及人類的特性、佛學對待生物技術的態度，以及討論若希望促進人類宗教性／靈性的發展，是應該選擇教育還是生物技術的途徑等等；最後，還提出了學界有必要分別針對一般意義上的宗教和不同宗教傳統（如佛教）的宗教性／靈性進行更完善的界定。藉此，希望這樣一個獨特的佛學視角的理解能夠豐富科學與宗教間的開放對話，尤其是在有關宗教性／靈性這個論題上。
