[Tex/LaTex] Table with a diagonal line that crosses cells

tables

How can I draw the following table in LaTeX?

enter image description here

I tried looking here but from the examples I can't figure out how I can draw this.

Edit: After browsing a few more times I found this with the help of which I could draw the table without the diagonal. Here is my MWE,

\begin{table}[]
\centering
\caption{My caption}
\label{my-label}
\begin{tabular}{|l|l|l|l|l|l|l|}
\hline
\multicolumn{1}{|c|}{CONCEPT} & \multicolumn{6}{c|}{COMPREHENSIVE NOTES}                                \\ \hline
Man                            & Substance & Material & Living           &     Sentient & Rational & Man \\ \hline
Animal                         & Substance & Material & Living           &     Sentient & Brutes   & Man \\ \hline
Organism                       & Substance & Material & Inanimate Bodies &     Plants   & Brutes   & Man \\ \hline
Body                           & Substance & Material & Inanimate Bodies &     Plants   & Brutes   & Man \\ \hline
Substance                      & Substance & Spirit   & Inanimate Bodies &     Plants   & Brutes   & Man \\ \hline
\multicolumn{1}{|c|}{}         & \multicolumn{6}{c|}{EXTENSIVE SUBJECTS}                                 \\ \hline
\end{tabular}
\end{table}

Best Answer

With tikz

\documentclass[a4paper]{article}
\usepackage{tikz}

\newcommand{\tikzmark}[2][]{\tikz[remember picture, overlay]\node[#1,inner sep=0pt,xshift=-\tabcolsep](#2){};\ignorespaces}
\newcommand{\tm}[2][]{\tikzmark[yshift=#1]{#2}}

\begin{document}
\begin{table}[]
\centering
\caption{My caption}
\label{my-label}
\begin{tabular}{|l|l|l|l|l|l|l|}
\hline
\multicolumn{1}{|c|}{CONCEPT}& \multicolumn{6}{c|}{COMPREHENSIVE NOTES}                                                       \\ \hline
Man                          & Substance & Material               & Living           & Sentient & Rational &\tm[1.8ex]{A} Man \\ \hline
Animal                       & Substance & Material               & Living           & Sentient & Brutes   & Man              \\ \hline
Organism                     & Substance & Material               & Inanimate Bodies & Plants   & Brutes   & Man              \\ \hline
Body                         & Substance & Material               & Inanimate Bodies & Plants   & Brutes   & Man              \\ \hline
Substance                    & Substance & \tm[-0.9ex]{B} Spirits & Inanimate Bodies & Plants   & Brutes   & Man              \\ \hline
\multicolumn{1}{|c|}{}       & \multicolumn{6}{c|}{EXTENSIVE SUBJECTS}                                                        \\ \hline
\end{tabular}
\tikz[remember picture, overlay]\draw[thick] (A)--(B);
\end{table}
\end{document}
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