The huge cultural authority science has acquired over the past century imposes large duties on every scientist. Scientists have acquired the power to impress and intimidate every time they open their mouths, and it is their responsibility to keep this power in mind no matter what they say or do. Too many have forgotten their obligation to approach with due respect the scholarly, artistic, religious, humanistic work that has always been mankind’s main spiritual support. Scientists are (on average) no more likely to understand this work than the man in the street is to understand quantum physics. But science used to know enough to approach cautiously and admire from outside, and to build its own work on a deep belief in human dignity. No longer.