The greatest discovery of any generation is that human beings can alter their lives by altering the attitudes of their minds. - Albert Schweitzer

The disastrous feature of our civilization is that it is far more developed materially than spiritually. Its balance is disturbed … Now come the facts to summon us to reflect. They tell us in terribly harsh language that a civilization which develops only on its material side, and not in the sphere of the spirit … heads for disaster.

The only really happy people are those who have learned how to serve.

Christianity has had to give up one piece after another of what it still imagined it possessed in the way of explanations of the universe. In this development it grows more and more into an expression of what constitutes its real nature. In a remarkable process of spiritualization it advances further and further from naive naiveté into the region of profound naiveté. The greater the number of explanations that slip from its hands, the more is the first of the Beatitudes, which may indeed be regarded as prophetic word concerning Christianity, fulfilled: "Blessed are the poor in spirit; for theirs is the Kingdom of Heaven."