Spoiler alert: This post is part of an in-depth discussion of Perelandra by C. S. Lewis, which will inevitably reveal key plot points. I recommend reading the book first. It's short, I promise.
Ransom and the Green Lady of Perelandra were exploring the Fixed Land, the one solid island on the planet, when they encountered Weston, who had abducted Ransom to Mars in Out of the Silent Planet. Weston tried to persuade Ransom of his newfound belief in emergent evolution, directed by an impersonal, spiritual "Force." In doing so, he allowed himself to become possessed by this Force.
Ransom followed Weston off the Fixed Land back to the mats of floating vegetation that comprise most of the "land" on Venus. There, in the dark, he overheard Weston trying to persuade the Green Lady that the ban on staying on the Fixed Land, imposed by Maleldil, was not as severe as she assumed. It was permissible for her to imagine living there, as it would make her wiser.
When Ransom awakens, he walks along the "shore" of his island, where he encounters one of Perelandra's native animals. However, something or someone has torn the colourful frog-like thing apart. With difficulty, Ransom puts the still-living animal out of its misery. He then continues his walk, following a trail of mutilated frogs, until he comes across Weston in the act of gutting one before he escapes again.
Typically, I use September to broaden my literary horizons a bit: try something I've never read before or wouldn't pick up on impulse. This year, I've decided to keep it simple: get through William L. Shirer's The Rise and Fall of the Third Reich. It's a classic work of World War II history that weighs approximately one anvil. I've owned my paperback copy for somewhat over 20 years and never read more than the first few chapters.