The book I just finished, "Narcisa" by Jonathan Shaw, started every chapter with a quote from people so diverse I don't have time to list their professions.
Many that resonated with me deeply, so you know you will be reading them within these four walls from now on.
It is inevitable.
On the light side but dripping with truth: "Cats are a standing rebuke to behavioral scientists wanting to know how the minds of animals work. The mind of a cat is an inscrutable mystery."