PATGOD Trivia (pinkfloyd-co.net/disco/piper/piper_album.html):
"Lucifer Sam was originally titled 'Percy The Rat Catcher'. Jenny Spires (Jenny Gentle) a girlfriend of Syd's at the time, bits from the I Ching [the 5,000 year-old Chinese Book of Changes, and his [Syd's] own ideas were mixed together as the inspiration for this ode to Syd's cat."
PATGOD Trivia (pinkfloyd-co.net/disco/piper/piper_album.html): "Lucifer Sam was originally titled 'Percy The Rat Catcher'. Jenny Spires (Jenny Gentle) a girlfriend of Syd's at the time, bits from the I Ching [the 5,000 year-old Chinese Book of Changes, and his [Syd's] own ideas were mixed together as the inspiration for this ode to Syd's cat."