需要每页不同的页脚，类似于每页页脚显示一句名人名言。

选自：https://wenda.latexstudio.net/q-2575.html
\setwisdom[分隔符]{名言列表}和\addwisdom[分隔符]{名言列表}设置名言列表

\documentclass{ctexart}
\usepackage{fancyhdr}
\usepackage{xparse}
\usepackage{xcolor}

\ExplSyntaxOn

\seq_new:N \g__wisdom_seq
\int_new:N \g__wisdom_idx_int

\int_gzero:N \g__wisdom_idx_int

\msg_new:nnn { wisdom } { invalid } { Invalid~index! }

\NewDocumentCommand \setwisdom { O{\\} m }
  {
    \set_wisdom:nn { #1 } { #2 }
  }

\NewDocumentCommand \addwisdom { O{\\} m }
  {
    \add_wisdom:nn { #1 } { #2 }
  }

\NewDocumentCommand \usewisdom { o }
  {
    \IfValueTF { #1 }
      {
        \int_compare:nTF
          { 1 <= #1 <= \seq_count:N \g__wisdom_seq }
          { \seq_item:Nn \g__wisdom_seq { #1 } }
          { \msg_error:nn { wisdom } { invalid } }
      }
      { \use_wisdom: }
  }

\cs_new_protected:Nn \set_wisdom:nn
  {
    \seq_gclear:N \g__wisdom_seq
    \seq_gset_split:Nnn \g__wisdom_seq { #1 } { #2 }
  }

\cs_new_protected:Nn \add_wisdom:nn
  {
    \seq_set_split:Nnn \l_tmpa_seq { #1 } { #2 }
    \seq_gconcat:NNN \g__wisdom_seq \g__wisdom_seq \l_tmpa_seq
  }

\cs_new_protected:Nn \use_wisdom:
  {
    \int_compare:nTF
      { \g__wisdom_idx_int = \seq_count:N \g__wisdom_seq }
      { \int_gzero:N \g__wisdom_idx_int }
      { \int_gincr:N \g__wisdom_idx_int }
    \seq_item:Nn \g__wisdom_seq { \g__wisdom_idx_int }
  }

\ExplSyntaxOff

\fancyhf{}
\renewcommand\headrulewidth{0pt}
\pagestyle{fancy}
\fancyfoot[C]{\itshape\color{teal}\usewisdom}

\setwisdom{
  Guilty consciences make men cowards.\\
  做贼心虚。\\
  Honesty is the best policy.\\
  做人诚信为本。
}
\addwisdom{
  Come what may, heaven won't fall.\\
  做你的吧，天塌不下来。
}

\begin{document}
abc
\newpage
abc
\newpage
abc
\newpage
abc
\end{document}