diff --git a/tex/thesis.tex b/tex/thesis.tex
index c085cff..1c4e6f7 100644
--- a/tex/thesis.tex
+++ b/tex/thesis.tex
@@ -20,7 +20,7 @@
 \usepackage{setspace}
 \usepackage{listings}
 \usepackage{tocloft}
-\usepackage{rotating}
+\usepackage{epigraph} 
 
 \hypersetup{
   colorlinks=true,
@@ -452,6 +452,20 @@
 
 \clearpage
 
+\vspace*{\fill}
+
+\begin{quote}
+You cannot answer a question that you cannot ask, and you cannot ask a
+question for which you have no words.
+
+\hfill \textit{-- Judea Pearl}
+\end{quote}
+
+\vspace{1in}
+\vspace*{\fill}
+
+\clearpage
+
 \chapter*{acknowledgements}
 \addcontentsline{toc}{chapter}{Acknowledgments}