[Tex/LaTex] Fit long sentence into table

tabularx

I would like the sentence "Why get someone who only pretends to be a doctor when you could get a real one?" to fit into this 430pt table. But the sentence doesn't break after "could" and keeps running out of line. Shouldn't long sentences automatically break into paragraph in tabularx? How can I fix it?
enter image description here

\documentclass[11pt]{book}

\usepackage{tabularx,pbox}

\begin{document}

\begin{table}
\begin{tabularx}{430pt}{|c|X|}
\hline
\textbf{Paragraph \#} & \textbf{Description:} \\
\hline
1 & \pbox{20cm}{\emph{Rhetorical questions/Introduction} \\ 
    Why get someone who only \emph{pretends} to be a doctor when you 
    could get a real one? \\ \emph{Relate to audience} \\ Some more sentence
    here.} \\ 

\end{tabularx}
\end{table}
\end{document}

I could insert \\ after "could" to manually break the line. But that would totally defeat the purpose.

Best Answer

You need no \pbox:

\documentclass[11pt]{book}

\usepackage{tabularx}

\begin{document}

\begin{table}
\centering

\renewcommand{\tabularxcolumn}{m} % we want center vertical alignment

\begin{tabularx}{\textwidth}{|c|>{\raggedright}X|}
\hline
\textbf{Paragraph \#} & \textbf{Description:} \tabularnewline
\hline
1 & \emph{Rhetorical questions/Introduction} \\
    Why get someone who only \emph{pretends} to be a doctor when you
    could get a real one? \\
    \emph{Relate to audience} \\
    Some more sentence here. \tabularnewline
\hline
\end{tabularx}
\end{table}
\end{document}

enter image description here

However, the number all alone in that big space is rather ugly.

Here's another possibility, without vertical rules.

\documentclass[11pt]{book}

\usepackage{tabularx,booktabs}

\begin{document}

\begin{table}
\centering
\begin{tabularx}{\textwidth}{c>{\raggedright}X}
\toprule
\textbf{Par.\ \#} & \textbf{Description:} \tabularnewline
\midrule
1 & \emph{Rhetorical questions/Introduction} \\
    Why get someone who only \emph{pretends} to be a doctor when you
    could get a real one? \\
    \emph{Relate to audience} \\
    Some more sentence here. \tabularnewline
\midrule
2 & \emph{Rhetorical questions/Introduction} \\
    Why get someone who only \emph{pretends} to be a doctor when you
    could get a real one? \\
    \emph{Relate to audience} \\
    Some more sentence here. \tabularnewline
\bottomrule
\end{tabularx}
\end{table}
\end{document}

enter image description here

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