With rapid progress in information technologies, records of human activities are being digitalized and archived at unprecedented speed and accuracy. The creation and management of high-performance, user-friendly mass digital archives not only presents many challenging research and engineering issues, but the digital content or collections in the digital archives themselves also serve as the foundation of a genuine "information society". We consider the digital library that we build in Academia Sinica as a human and content-centered system with participants including general users, researchers, content providers, content digitalization specialists, and system engineers. In building the Academia Sinica Digital Library we not only obtain various supporting tools for content management, but also establish a unified process for content creation, storage and presentation, which helps ascertain consistency and interoperability of the content in the digital library. In this article we touch on some issues related to the construction, usage and maintenance of a digital library aimed to contain a diverse range of collections of digital objects putting together by information content providers of various disciplines, and be ubiquitously accessible via the Internet.