Lecture IV
The only sources that make it possible for a moral and religious world concept to exist side by side with the natural scientific one are those of spiritual science. But they must be sought where they find expression in full earnestness. It is difficult for many people nowadays to seek out these sources. They prefer to ignore the glaring contradiction that I have once again brought to your notice, for they do not have the courage to assail the natural scientific world-view itself. They hear from those they look upon as authorities that the law of the conservation of matter and of energy[^6] is irrefutable, and that anyone who questions it is a mere dilettante. Oppressed by the tremendous weight of this false authority, mankind lacks the courage to turn from it to the sources of spiritual science.