我想在论文中写一段引文。因此我以如下方式使用了 epigraph 包：
\vspace*{0.2\textheight}
\setlength{\epigraphwidth}{1\textwidth}
\noindent\epigraph{\LARGE{"\itshape{\textgreekfont\catcode`~=12 Kaὶ man\texttheta 'anw mὲn oῖa drᾶn m'ellw kak'a, \texttheta umὸs dὲ kre'isswn tῶn ἐmῶn bouleum'atwn, ὅsper meg'istwn aἴtios kakῶn brotoῖs}}"} {Euripide, \textsl{Medea},vv1078-1080}
\bigbreak
\vspace*{0.07\textheight}
\Large{\textit{"But passion, that cause of direst woes to mortal man, hath triumphed o'er my sober thoughts"}}
\clearpage
这段代码不知何故影响了剩余的整个文本，减少了页面的边距并增加了字体大小。你能帮我理解为什么吗？谢谢