What are the symbols in The Strange Case of Dr. Jekyll and Mr. Hyde?

Some of
the interesting symbols that appear in 's novella are the drug, Jekyll's and Hyde's hands, and
the written letters and reports.

While the drug Dr. Jekyll created was meant
specifically to separate the good from the evil part of man, it symbolizes addiction to anything
that brings out the worst in someone. Jekyll finds himself coming more and more under the
influence of Hyde and the drug; eventually, the drug is not required to turn Jekyll into Hyde.
Jekyll's struggles to keep Hyde at bay mirror an addict's struggle to remain sober or in
control.

Stevenson contrasts Jekyll's hands with Hyde's hands. When Jekyll
returns to his own home, falling asleep as Jekyll but waking up as Hyde, he confirms his status
by viewing his hand. Hyde's...