Excerpts from Alan Rickman's journal offer an intimate glimpse into the late actor's life and career, including his decades-long role in the Harry Potter franchise.

The diary entries, which span 25 years of Rickman's life, will be published as a book, Madly, Deeply: The Diaries of Alan Rickman, out Oct.

In excerpts published in The Guardian, Rickman shared entries about his desire to exit Harry Potter as the anguished wizard and professor Severus Snape in 2002, one month after the release of Harry Potter and the Chamber of Secrets4

"I have finished reading the last Harry Potter book," he wrote in a July 2007 entry.

Horton added, "The diaries reveal not just Alan Rickman the actor, but the real Alan – his sense of humor, his sharp observation, his craftsmanship and his devotion to the arts."