""Decision: Or Religion Must Be All, Or Is Nothing"" is a book written by Grace Kennedy in 1854. The book explores the idea that religion must be a central aspect of one's life and that it cannot be compartmentalized or separated from other aspects of one's existence. Kennedy argues that religion must be all-encompassing and that it must be the guiding force in all decisions and actions. The book is written in a persuasive and compelling style and...