The unreservedness of life together makes one person open to another; in the conflict between determination for truth with all of its consequences and the will for community, the latter prevails. This is characteristic of all American thought, particularly as I have observed it in theology and the church; they do not see the radical claim of truth on the shaping of their lives. Community is therefore founded less on truth than on the spirit of “fairness”.
Diedrich Bonhoeffer 1930, as quoted by Eric Metaxas, Bonhoeffer: Pastor, Martyr, Prophet, Spy, page 104
Christianity preaches the infinite worth of that which is seemingly worthless and the infinite worthlessness of that which is seemingly so valued.
Diedrich Bonhoeffer quoted by Eric Metaxas, Bonhoeffer: Pastor, Martyr, Prophet, Spy, page 85
If you are a preacher of Grace, then preach a true, not a fictitious grace; if grace is true, you must bear a true and not a fictitious sin. God does not save people who are only fictitious sinners. Be a sinner and sin boldly, but believe and rejoice in Christ even more boldly. For he is victorious over sin, death, and the world. As long as we are here we have to sin. This life in not the dwelling place of righteousness but, as Peter says, we look for a new heavens and a new earth in which righteousness dwells… . Pray boldly-you too are a mighty sinner.

(Weimar ed. vol. 2, p. 371; Letters I, “Luther’s Works,” American Ed., Vol 48. p. 281- 282) 

In New York they preach about virtually everything; only one thing is not addressed, or is addressed so rarely that I have as yet been unable to hear it, namely, the gospel of Jesus Christ, the cross, sin, and forgiveness, death and life.
Diedrich Bonhoeffer 1930
It is impossible to forgive someone if you feel superior to him or her.
Tim Keller, The Prodigal God (p55) (via lifeinthestory)
In this lecture, Bonhoeffer tipped one sacred cow after the other. Having dealt with the idea of Christ as no mere ethicist, he proceeded to explain the similarity of the Christian religion to other religions. Then he came to his main point: the essence of Christianity is not about religion at all, but about the person of Christ…religion was a dead, man-made thing, and at the heart of Christianity was something else entirely - God himself, alive.
Eric Mexaxas, Bonhoeffer: Pastor, Martyr, Prophet, Spy, page 83
Christianity’s basic message differs at root with the assumptions of traditional religion. The founders of every other major religion essentially came as teachers, not as saviors. They came to say: “Do this and you will find the divine.” But Jesus came essentially as a savior rather than a teacher (though he was that as well). Jesus says: “I am the divine come to you, to do what you could not do for yourselves.” The Christian message is that we are saved not by our record, but by Christ’s record. So Christianity is not religion or irreligion. It is something else altogether.
Tim Keller, The Reason for God (p185) (via lifeinthestory)