Most apologetic books are really written for Christians, even the ones that purport to be written for non-believers.

The issue on which everything hangs is not whether you like His teaching but if He ‪rose from the dead.

The human heart is an idol factory that takes good things like a successful career, love, material possessions, even family, and turns them into ultimate things. Our hearts deify them as the center of our lives, because, we think, they can give us significance and security, safety and fulfillment, if we attain them.

The sin that is most destructive in your life right now is the one you are most defensive about.

[T]he main problem in life is sin, and the only solution is God and his grace. The alternative to this view is to identify something besides sin as the main problem with the world and something besides God as the main remedy. That demonizes something that is not completely bad, and makes an idol out of something that cannot be the ultimate good.

There seems to be a human instinct for prayer. Swiss theologian Karl Barth calls it our 'incurable God-sickness.'

When you listen and read one thinker, you become a clone… two thinkers, you become confused… ten thinkers, you’ll begin developing your own voice… two or three hundred thinkers, you become wise and develop your voice.