I was reading some short stories by Arthur C. Clarke, and I found this paragraph:
|"All it needed, Jerry told himself, was Charon’s ferry waiting to take them to the other side – or the Swan of Tuonela swimming majestically back and forth as it guarded the entrance to the
"Before Eden" (1961)
A reference to the Sibelius' work? Or just a reference to the Kalevala?