In an old message delivered on July 12, 1981, John Piper said:
“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%.”
Tony Reinke 
So could we contextualize that statement and say that “it is tweets that change my life, not books”?
Not unless you want to replace “book” with “Facebook.” LOL. In reading a book there’s a momentum that builds that makes certain sentences stand out. I’m not sure JP is saying that sentences that have no more than 140 characters of context are life changing. If that were the case he could have said bumper stickers change lives.
Amen Piper! I leave the 99 behind and find the one also….