Photo by Kelly Sikkema on Unsplash

When possible, I'm trying to read books in epub format or as printed books. Most of my notes and journals live in Logseq. So I was asking myself: "How could I bring my ebook highlights and notes to Logseq?"
While it isn't possible to load epub files into Logseq like you can do with PDF files, it is possible to reference your calibre notes and highlights - here's how:
First, highlight a section in a book and maybe also jot down some notes in a book using calibre:

Next, click the "Export" button at the bottom right and selected "Markdown":

Now, click the "Copy to clipboard" button and paste the clipboard into your Logseq page:

As you can see, the highlighted section and the notes taken are now in your Logseq page for the book.
Did you spot the link 10.04.23 17:19? That's a deep link to your notes in calibre.
If you click the link, the book will be opened in calibre at the highlighted section. Neat, isn't it?
