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{To the Editors of the Journal of Physical Chemistry Letters}

\opening{Dear Editors,}

\justifying
Please find enclosed our invited \textit{Perspective} manuscript entitled
\begin{quote}
\textit{``The Bethe-Salpeter Equation Formalism: From Physics to Chemistry''}, 
\end{quote}
which provides a concise and fair assessment of the strengths and weaknesses of the Bethe-Salpeter equation (BSE) formalism.
This contribution has never been submitted in total nor in parts to any other journal, and has been seen and approved by all authors.
We hope that, by providing a snapshot of the ability of BSE in 2020, the present \textit{Perspective} article will popularize further this alternative to TD-DFT which, we believe, may become a very valuable computational tool for the physical chemistry community in the near future.

We have worked hard to make our manuscript accessible to the wide audience of \textit{The Journal of Physical Chemistry Letters}.
In particular, we have described the different concepts around the Bethe-Salpeter formalism with terms familiar to both chemists and physics.
We hope that the editors and the reviewers of JPCL will find this \textit{Perspective} article enjoyable and educative.

We suggest Don Truhlar, Patrick Rinke, Weito Yang, Michael Rohlfing, Wim Klopper, and Lucia Reining as potential referees.
We look forward to hearing from you soon.

\closing{Sincerely, the authors.}


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