I have a notebook (2 actually) that I use to write down quotes from books that strike me or that I want to remember for later. I know other readers that do this as well.
Recently I finished reading Counterfeit Gospels by Trevin Wax. Here are some quotes that stood out for me:
"Sin is personal. We are guilty of cosmic treason, asserting our own lordship over the lordship of God. We seek worth and value in something other than the Source of all worth. Our hearts are idol-making factories. We seek to worship anything - just not the One who has made us."
"Ironically, when we live as if our personal story is at the center of our universe, we struggle to find meaning and significance. But when Christ is at the center and we are pushed to the periphery, it is then - in that place of seeming obscurity and insignificance - that we find true worth and value, by giving glory to the crucified and risen King with whom we can become united through faith."
I haven't actually finished this book, but I started reading it and plan to go back to it at some point. Gospel-Driven Life by Michael Horton was good but I tried reading during my "not-really-reading-much" phase and ended up sending it back to the library unfinished. Here are some quotes from what I did get read:
"God does not exist to make sure that we are happy and fulfilled. Rather, we exist to glorify God and to enjoy him forever."
"...reserves the right to disturb the status quo whenever his wisdom dictates."
"What does God expect of you?...We are not responsible for knowing things that God has not revealed: like where we should live, whom we should marry...It is not a question of finding the place where God wants you to be, but being the person he wants you to be where you are. He has told you everything for which he holds you responsible...he has revealed his purpose for your life...Is your chief goal each morning to glorify God and to enjoy him or to glorify and enjoy yourself, taking God as seriously as his services justify in your pursuit of happiness?"