更改题词中的字体大小

Question

我想减小部分页面上题词的字体大小。当我写下：

\documentclass[a4paper, 12pt]{book}
\usepackage{epigraph}
\usepackage{titlesec}

\makeatletter
\titleformat{\part}[display]
  {\Huge\scshape\filright}
  {\partname~\thepart:}
  {20pt}
  {\thispagestyle{epigraph}}
\makeatother
\setlength\epigraphwidth{.6\textwidth}
\renewcommand{\epigraphsize}{\footnotesize}

\begin{document}

\epigraphhead[450]{Connais-toi toi-meme.\par\hfill\textsc{Platon}}
\part{A Test Part Title}

\end{document}

题词的字体大小为12pt：

Answer 1

解决方案如下xpatch：

\documentclass[a4paper, 12pt, oneside]{book}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{xcolor}
\usepackage{epigraph}
\usepackage{xpatch}
\usepackage{titlesec}
%
\makeatletter
\renewcommand{\epigraphsize}{\footnotesize}
\setlength\epigraphwidth{.6\textwidth}
\xpatchcmd{\epigraphhead}{\begin{minipage}{\epigraphwidth}}{\begin{minipage}{\epigraphwidth}\raggedleft\epigraphsize}{}{}
\titleformat{\part}[display]
 {\Huge\scshape\filright}
 {\partname~\thepart:}
 {20pt}
 {\thispagestyle{epigraph}}
\makeatother

\begin{document}

\epigraphhead[450]{Connais-toi toi-même.\par\textsc{Platon}}

\part{A Test Part Title}

\end{document}