\documentclass{book}

\usepackage{alltt}


\begin{document}

\begin{alltt}
Farschad Torai is typing \(\mu\) in verbatim mode...
and you can  compare it with real verbatim mode!
\end{alltt}


\begin{verbatim}
Farschad Torai is typing \(\mu\) in verbatim mode...
and you can  compare it with real verbatim mode!
\end{verbatim}

\end{document}