The Christian Church does not exist in Heaven, but on earth and in time.

Man can certainly keep on lying... but he cannot make truth falsehood. He can certainly rebel... but he can accomplish nothing which abolishes the choice of God.

When the frontier between God and man, the last inexorable barrier and obstacle, is not closed, the barrier between what is normal and what is perverse is opened.

Faith is not an art. Faith is not an achievement. Faith is not a good work of which some may boast while others can excuse themselves with a shrug of the shoulders for not being capable of it. It is a decisive insight of faith itself that all of us are incapable of faith in ourselves, whether we think of its preparation, beginning, continuation, or completion.

That the zeal for God's honor is also a dangerous passion, that the Christian must bring with him the courage to swim against the tide instead of with it... accept a good deal of loneliness, will perhaps be nowhere so clear and palpable as in the church, where he would so much like things to be different. Yet he cannot and he will not refuse to take this risk and pay this price... he belongs where the reformation of the church is underway or will again be underway.

The resurrection of Jesus was like a boulder crashing into the pool of history.

No one can be saved - in virtue of what he can do. Everyone can be saved - in virtue of what God can do.