序言一定有问题
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BL, Harley MS 973
\textit{Appiani Alexandrini Romanarum Historiarum }, Basel: Hieronymus Froben und Nicolaus Episcopius 1554.
Alcuin, \textit{The Bishops, Kings, and Saints of York}, ed. Peter Godman, Oxford: Oxford University Press, 1982.
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答案1
导致错误的直接原因是添加了以下行：
\usepackage{parskip}
这个包试图比简单地做更智能一点
\setlength{\parskip}{10pt}% e.g.
\setlength{\parindent}{0pt}
来实现10pt在段落之间留出空白，并使段落开头的段落缩进为零。（parskip我认为，主要的技巧是摆弄它\parfillskip，使段落的结尾通常在视觉上显而易见。）
但是，导致您错误的根本原因可能是您从其他文档中复制了序言，而不知道这样做的原因或“目的”是什么。这确实是一件非常不明智的事情。至少，它最终让 TeX 看起来并不比文字处理软件更神奇——或者，实际上，也许更神奇。
这是尤其如果你打算使用 LaTeX 制作批判版，那么这是真的！（我从 判断这一点\usepackage{ledmac}。）批判版需要大量的关注和关注才能建立所谓的批判文本。对.tex文件的细节也要给予同样的关注和关注，否则你的努力将在很大程度上白费。（比没有批判版更糟糕的是假装批判的版本，但实际上并不是。）因此，本着这种精神，我鼓励你：
如果您刚刚起步，请从 切换
ledmac到reledmac以使用更现代的工具（此外，这些工具是由关心批判性编辑的人员积极开发的）；了解书目管理，这是任何“人文驱动”的 LaTeX 用户的关键问题之一；
花点时间了解一下你正在装载的包裹。从长远来看，这将带来巨大的回报。