What I have learned from about twenty years of serious reading is this: It is sentences that change my life, not books. What changes my life is some new glimpse of truth, some powerful challenge, some resolution to a long-standing dilemma, and these usually come concentrated in a sentence or two. I do not remember 99% of what I read, but if the 1% of each book or article I do remember is a life-changing insight, then I don't begrudge the 99%.
From "Quantitative Hopelessness and the Immeasurable Moment

Autore: John Piper