Please help translate the following content into English, where "Return line does not need to be translated, return as it is, all other Chinese should be translated into English: Seeking ancient books

Author: Xu Zongyuan
Publisher:
Publish Date: 2006-10-01
Features: Human group organizations, whether at any level, from small clubs to large cultural systems, all experience rise and fall, with no stable groups in sight. This universal phenomenon encompasses the countless joys and sorrows of human history. Since ancient times, historians both at home and abroad have strived to narrate the myriad changes. "Change" is the only constant "norm" in human history! Many predecessors have proposed different explanations to account for the great variability of human history. If we observe the intrinsic nature of the system structure, it may also serve as an angle for explaining historical changes. The essays in this book discuss various topics, including state systems and cultural phenomena. Whether concerning feudal systems, civil service systems, state power, or the rise and fall of cultures, they largely belong to complex systems at this level, and their existing structures are merely the forms that stable states should take. However, in history, these systems are always in flux, constantly undergoing changes, leading to their decline, deterioration, and even collapse.